<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <!-- resId: 8361351, doi: 10.16152/j.cnki.xdxbzr.2017-04-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-009/"/>
  </url>

  <!-- resId: 8361096, doi: 10.16152/j.cnki.xdxbzr.2017-04-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-016/"/>
  </url>

  <!-- resId: 8361363, doi: 10.16152/j.cnki.xdxbzr.2017-04-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-002/"/>
  </url>

  <!-- resId: 8361110, doi: 10.16152/j.cnki.xdxbzr.2017-04-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-007/"/>
  </url>

  <!-- resId: 8361119, doi: 10.16152/j.cnki.xdxbzr.2017-04-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-010/"/>
  </url>

  <!-- resId: 8361378, doi: 10.16152/j.cnki.xdxbzr.2017-04-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-001/"/>
  </url>

  <!-- resId: 8361134, doi: 10.16152/j.cnki.xdxbzr.2017-04-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-003/"/>
  </url>

  <!-- resId: 8361397, doi: 10.16152/j.cnki.xdxbzr.2017-04-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-022/"/>
  </url>

  <!-- resId: 8361149, doi: 10.16152/j.cnki.xdxbzr.2017-04-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-021/"/>
  </url>

  <!-- resId: 8361160 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361160/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361160/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361160/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361160/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361160/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361160/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361160/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361160/"/>
  </url>

  <!-- resId: 8361163, doi: 10.16152/j.cnki.xdxbzr.2017-08-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-012/"/>
  </url>

  <!-- resId: 8361427, doi: 10.16152/j.cnki.xdxbzr.2017-04-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-018/"/>
  </url>

  <!-- resId: 8361177 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361177/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361177/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361177/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361177/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361177/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361177/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361177/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361177/"/>
  </url>

  <!-- resId: 8361180, doi: 10.16152/j.cnki.xdxbzr.2017-04-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-04-019/"/>
  </url>

  <!-- resId: 8361457, doi: 10.16152/j.cnki.xdxbzr.2017-08-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/</loc>
    <lastmod>2021-04-13T13:39:05+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-08-015/"/>
  </url>

  <!-- resId: 8362753, doi: 10.16152/j.cnki.xdxbzr.2017-03-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-021/"/>
  </url>

  <!-- resId: 8362760, doi: 10.16152/j.cnki.xdxbzr.2017-03-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-008/"/>
  </url>

  <!-- resId: 8362508, doi: 10.16152/j.cnki.xdxbzr.2017-03-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-022/"/>
  </url>

  <!-- resId: 8362770, doi: 10.16152/j.cnki.xdxbzr.2017-03-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-014/"/>
  </url>

  <!-- resId: 8362518, doi: 10.16152/j.cnki.xdxbzr.2017-03-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-017/"/>
  </url>

  <!-- resId: 8362531, doi: 10.16152/j.cnki.xdxbzr.2017-03-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-020/"/>
  </url>

  <!-- resId: 8362547, doi: 10.16152/j.cnki.xdxbzr.2017-03-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-001/"/>
  </url>

  <!-- resId: 8362370, doi: 10.16152/j.cnki.xdxbzr.2017-03-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-006/"/>
  </url>

  <!-- resId: 8362631, doi: 10.16152/j.cnki.xdxbzr.2017-03-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-016/"/>
  </url>

  <!-- resId: 8362385, doi: 10.16152/j.cnki.xdxbzr.2017-03-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-011/"/>
  </url>

  <!-- resId: 8362398, doi: 10.16152/j.cnki.xdxbzr.2017-03-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-010/"/>
  </url>

  <!-- resId: 8362413, doi: 10.16152/j.cnki.xdxbzr.2017-03-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-007/"/>
  </url>

  <!-- resId: 8362672, doi: 10.16152/j.cnki.xdxbzr.2017-03-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-003/"/>
  </url>

  <!-- resId: 8362682 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8362682/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362682/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362682/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362682/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8362682/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362682/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362682/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362682/"/>
  </url>

  <!-- resId: 8362685, doi: 10.16152/j.cnki.xdxbzr.2017-03-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-015/"/>
  </url>

  <!-- resId: 8362431 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8362431/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362431/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362431/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362431/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8362431/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362431/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362431/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362431/"/>
  </url>

  <!-- resId: 8362434, doi: 10.16152/j.cnki.xdxbzr.2017-03-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-004/"/>
  </url>

  <!-- resId: 8362446, doi: 10.16152/j.cnki.xdxbzr.2017-03-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-009/"/>
  </url>

  <!-- resId: 8362702, doi: 10.16152/j.cnki.xdxbzr.2017-03-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-005/"/>
  </url>

  <!-- resId: 8362462, doi: 10.16152/j.cnki.xdxbzr.2017-03-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-002/"/>
  </url>

  <!-- resId: 8362719, doi: 10.16152/j.cnki.xdxbzr.2017-03-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-019/"/>
  </url>

  <!-- resId: 8362476, doi: 10.16152/j.cnki.xdxbzr.2017-03-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-012/"/>
  </url>

  <!-- resId: 8362736, doi: 10.16152/j.cnki.xdxbzr.2017-03-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-013/"/>
  </url>

  <!-- resId: 8362492, doi: 10.16152/j.cnki.xdxbzr.2017-03-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/</loc>
    <lastmod>2021-04-13T13:39:09+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-03-018/"/>
  </url>

  <!-- resId: 8361991, doi: 10.16152/j.cnki.xdxbzr.2017-02-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-006/"/>
  </url>

  <!-- resId: 8362003, doi: 10.16152/j.cnki.xdxbzr.2017-02-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-004/"/>
  </url>

  <!-- resId: 8361749, doi: 10.16152/j.cnki.xdxbzr.2017-02-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-002/"/>
  </url>

  <!-- resId: 8362015, doi: 10.16152/j.cnki.xdxbzr.2017-02-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-023/"/>
  </url>

  <!-- resId: 8362025, doi: 10.16152/j.cnki.xdxbzr.2017-02-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-022/"/>
  </url>

  <!-- resId: 8361770, doi: 10.16152/j.cnki.xdxbzr.2017-02-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-014/"/>
  </url>

  <!-- resId: 8362283, doi: 10.16152/j.cnki.xdxbzr.2017-02-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-010/"/>
  </url>

  <!-- resId: 8362035, doi: 10.16152/j.cnki.xdxbzr.2017-02-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-020/"/>
  </url>

  <!-- resId: 8362297, doi: 10.16152/j.cnki.xdxbzr.2017-02-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-008/"/>
  </url>

  <!-- resId: 8362044, doi: 10.16152/j.cnki.xdxbzr.2017-02-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-005/"/>
  </url>

  <!-- resId: 8362057, doi: 10.16152/j.cnki.xdxbzr.2017-02-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-009/"/>
  </url>

  <!-- resId: 8361810, doi: 10.16152/j.cnki.xdxbzr.2017-02-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-013/"/>
  </url>

  <!-- resId: 8362073, doi: 10.16152/j.cnki.xdxbzr.2017-02-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-025/"/>
  </url>

  <!-- resId: 8362083, doi: 10.16152/j.cnki.xdxbzr.2017-02-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-016/"/>
  </url>

  <!-- resId: 8362340, doi: 10.16152/j.cnki.xdxbzr.2017-02-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-021/"/>
  </url>

  <!-- resId: 8362349, doi: 10.16152/j.cnki.xdxbzr.2017-02-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-018/"/>
  </url>

  <!-- resId: 8361842 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361842/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361842/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361842/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361842/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361842/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361842/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361842/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361842/"/>
  </url>

  <!-- resId: 8362098 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8362098/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362098/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362098/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362098/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8362098/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362098/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362098/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362098/"/>
  </url>

  <!-- resId: 8361845, doi: 10.16152/j.cnki.xdxbzr.2017-02-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-015/"/>
  </url>

  <!-- resId: 8361871, doi: 10.16152/j.cnki.xdxbzr.2017-02-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-001/"/>
  </url>

  <!-- resId: 8362651, doi: 10.16152/j.cnki.xdxbzr.2017-02-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-017/"/>
  </url>

  <!-- resId: 8361888, doi: 10.16152/j.cnki.xdxbzr.2017-02-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-019/"/>
  </url>

  <!-- resId: 8361918, doi: 10.16152/j.cnki.xdxbzr.2017-02-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-007/"/>
  </url>

  <!-- resId: 8361936, doi: 10.16152/j.cnki.xdxbzr.2017-02-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-024/"/>
  </url>

  <!-- resId: 8361945 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361945/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361945/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361945/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361945/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361945/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361945/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361945/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361945/"/>
  </url>

  <!-- resId: 8361948, doi: 10.16152/j.cnki.xdxbzr.2017-02-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-011/"/>
  </url>

  <!-- resId: 8361966, doi: 10.16152/j.cnki.xdxbzr.2017-02-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-012/"/>
  </url>

  <!-- resId: 8361726, doi: 10.16152/j.cnki.xdxbzr.2017-02-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/</loc>
    <lastmod>2021-04-13T13:39:08+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-02-003/"/>
  </url>

  <!-- resId: 8361736, doi: 10.16152/j.cnki.xdxbzr.2017-01-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-014/"/>
  </url>

  <!-- resId: 8362273, doi: 10.16152/j.cnki.xdxbzr.2017-01-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-024/"/>
  </url>

  <!-- resId: 8361518, doi: 10.16152/j.cnki.xdxbzr.2017-01-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-001/"/>
  </url>

  <!-- resId: 8362803, doi: 10.16152/j.cnki.xdxbzr.2017-01-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-016/"/>
  </url>

  <!-- resId: 8361782, doi: 10.16152/j.cnki.xdxbzr.2017-01-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-020/"/>
  </url>

  <!-- resId: 8361537 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361537/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361537/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361537/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361537/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361537/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361537/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361537/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361537/"/>
  </url>

  <!-- resId: 8361540 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361540/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361540/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361540/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361540/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361540/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361540/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361540/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361540/"/>
  </url>

  <!-- resId: 8361796, doi: 10.16152/j.cnki.xdxbzr.2017-01-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-022/"/>
  </url>

  <!-- resId: 8361543, doi: 10.16152/j.cnki.xdxbzr.2017-01-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-006/"/>
  </url>

  <!-- resId: 8362322, doi: 10.16152/j.cnki.xdxbzr.2017-01-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-021/"/>
  </url>

  <!-- resId: 8361560, doi: 10.16152/j.cnki.xdxbzr.2017-01-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-004/"/>
  </url>

  <!-- resId: 8362588 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8362588/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362588/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362588/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362588/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8362588/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362588/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362588/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362588/"/>
  </url>

  <!-- resId: 8362591, doi: 10.16152/j.cnki.xdxbzr.2017-01-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-015/"/>
  </url>

  <!-- resId: 8361825, doi: 10.16152/j.cnki.xdxbzr.2017-01-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-017/"/>
  </url>

  <!-- resId: 8361570, doi: 10.16152/j.cnki.xdxbzr.2017-01-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-009/"/>
  </url>

  <!-- resId: 8361861, doi: 10.16152/j.cnki.xdxbzr.2017-01-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-023/"/>
  </url>

  <!-- resId: 8362126, doi: 10.16152/j.cnki.xdxbzr.2017-01-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-003/"/>
  </url>

  <!-- resId: 8361643 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8361643/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361643/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361643/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361643/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8361643/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8361643/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8361643/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8361643/"/>
  </url>

  <!-- resId: 8361646, doi: 10.16152/j.cnki.xdxbzr.2017-01-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-025/"/>
  </url>

  <!-- resId: 8362166 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8362166/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362166/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362166/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362166/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8362166/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8362166/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8362166/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8362166/"/>
  </url>

  <!-- resId: 8361657, doi: 10.16152/j.cnki.xdxbzr.2017-01-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-008/"/>
  </url>

  <!-- resId: 8362169, doi: 10.16152/j.cnki.xdxbzr.2017-01-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-007/"/>
  </url>

  <!-- resId: 8361671, doi: 10.16152/j.cnki.xdxbzr.2017-01-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-019/"/>
  </url>

  <!-- resId: 8362187, doi: 10.16152/j.cnki.xdxbzr.2017-01-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-010/"/>
  </url>

  <!-- resId: 8361691, doi: 10.16152/j.cnki.xdxbzr.2017-01-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-018/"/>
  </url>

  <!-- resId: 8362206, doi: 10.16152/j.cnki.xdxbzr.2017-01-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-026/"/>
  </url>

  <!-- resId: 8361706, doi: 10.16152/j.cnki.xdxbzr.2017-01-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-011/"/>
  </url>

  <!-- resId: 8362223, doi: 10.16152/j.cnki.xdxbzr.2017-01-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-012/"/>
  </url>

  <!-- resId: 8361979, doi: 10.16152/j.cnki.xdxbzr.2017-01-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-005/"/>
  </url>

  <!-- resId: 8362236, doi: 10.16152/j.cnki.xdxbzr.2017-01-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/</loc>
    <lastmod>2021-04-13T13:39:07+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2017-01-013/"/>
  </url>

  <!-- resId: 8359433, doi: 10.16152/j.cnki.xdxbzr.2016-06-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-019/"/>
  </url>

  <!-- resId: 8359184, doi: 10.16152/j.cnki.xdxbzr.2016-06-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-023/"/>
  </url>

  <!-- resId: 8359205 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359205/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359205/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359205/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359205/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359205/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359205/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359205/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359205/"/>
  </url>

  <!-- resId: 8359464, doi: 10.16152/j.cnki.xdxbzr.2016-06-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-013/"/>
  </url>

  <!-- resId: 8359482, doi: 10.16152/j.cnki.xdxbzr.2016-06-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-003/"/>
  </url>

  <!-- resId: 8359498, doi: 10.16152/j.cnki.xdxbzr.2016-06-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-015/"/>
  </url>

  <!-- resId: 8359251, doi: 10.16152/j.cnki.xdxbzr.2016-06-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-018/"/>
  </url>

  <!-- resId: 8358999, doi: 10.16152/j.cnki.xdxbzr.2016-06-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-021/"/>
  </url>

  <!-- resId: 8359008, doi: 10.16152/j.cnki.xdxbzr.2016-06-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-010/"/>
  </url>

  <!-- resId: 8359025, doi: 10.16152/j.cnki.xdxbzr.2016-06-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-006/"/>
  </url>

  <!-- resId: 8359036, doi: 10.16152/j.cnki.xdxbzr.2016-06-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-005/"/>
  </url>

  <!-- resId: 8359051, doi: 10.16152/j.cnki.xdxbzr.2016-06-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-012/"/>
  </url>

  <!-- resId: 8359315, doi: 10.16152/j.cnki.xdxbzr.2016-06-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-020/"/>
  </url>

  <!-- resId: 8359065 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359065/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359065/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359065/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359065/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359065/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359065/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359065/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359065/"/>
  </url>

  <!-- resId: 8359068 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359068/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359068/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359068/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359068/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359068/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359068/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359068/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359068/"/>
  </url>

  <!-- resId: 8359330, doi: 10.16152/j.cnki.xdxbzr.2016-06-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-014/"/>
  </url>

  <!-- resId: 8359083, doi: 10.16152/j.cnki.xdxbzr.2016-06-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-022/"/>
  </url>

  <!-- resId: 8359096, doi: 10.16152/j.cnki.xdxbzr.2016-06-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-001/"/>
  </url>

  <!-- resId: 8359354, doi: 10.16152/j.cnki.xdxbzr.2016-06-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-024/"/>
  </url>

  <!-- resId: 8359110, doi: 10.16152/j.cnki.xdxbzr.2016-06-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-016/"/>
  </url>

  <!-- resId: 8359371, doi: 10.16152/j.cnki.xdxbzr.2016-06-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-017/"/>
  </url>

  <!-- resId: 8359130, doi: 10.16152/j.cnki.xdxbzr.2016-06-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-011/"/>
  </url>

  <!-- resId: 8359389, doi: 10.16152/j.cnki.xdxbzr.2016-06-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-009/"/>
  </url>

  <!-- resId: 8359144, doi: 10.16152/j.cnki.xdxbzr.2016-06-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-008/"/>
  </url>

  <!-- resId: 8359401, doi: 10.16152/j.cnki.xdxbzr.2016-06-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-002/"/>
  </url>

  <!-- resId: 8359155, doi: 10.16152/j.cnki.xdxbzr.2016-06-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-007/"/>
  </url>

  <!-- resId: 8360696, doi: 10.16152/j.cnki.xdxbzr.2016-06-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/</loc>
    <lastmod>2021-04-13T13:39:00+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-06-004/"/>
  </url>

  <!-- resId: 8358657, doi: 10.16152/j.cnki.xdxbzr.2016-05-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-016/"/>
  </url>

  <!-- resId: 8359170, doi: 10.16152/j.cnki.xdxbzr.2016-05-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-008/"/>
  </url>

  <!-- resId: 8358665, doi: 10.16152/j.cnki.xdxbzr.2016-05-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-021/"/>
  </url>

  <!-- resId: 8358926, doi: 10.16152/j.cnki.xdxbzr.2016-05-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-018/"/>
  </url>

  <!-- resId: 8358677, doi: 10.16152/j.cnki.xdxbzr.2016-05-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-023/"/>
  </url>

  <!-- resId: 8358936, doi: 10.16152/j.cnki.xdxbzr.2016-05-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-024/"/>
  </url>

  <!-- resId: 8359192, doi: 10.16152/j.cnki.xdxbzr.2016-05-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-004/"/>
  </url>

  <!-- resId: 8359208 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359208/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359208/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359208/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359208/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359208/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359208/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359208/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359208/"/>
  </url>

  <!-- resId: 8358698, doi: 10.16152/j.cnki.xdxbzr.2016-05-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-013/"/>
  </url>

  <!-- resId: 8358955, doi: 10.16152/j.cnki.xdxbzr.2016-05-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-019/"/>
  </url>

  <!-- resId: 8359211, doi: 10.16152/j.cnki.xdxbzr.2016-05-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-025/"/>
  </url>

  <!-- resId: 8358711, doi: 10.16152/j.cnki.xdxbzr.2016-05-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-026/"/>
  </url>

  <!-- resId: 8359228, doi: 10.16152/j.cnki.xdxbzr.2016-05-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-007/"/>
  </url>

  <!-- resId: 8358973, doi: 10.16152/j.cnki.xdxbzr.2016-05-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-020/"/>
  </url>

  <!-- resId: 8358725, doi: 10.16152/j.cnki.xdxbzr.2016-05-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-022/"/>
  </url>

  <!-- resId: 8358734, doi: 10.16152/j.cnki.xdxbzr.2016-05-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-015/"/>
  </url>

  <!-- resId: 8358746, doi: 10.16152/j.cnki.xdxbzr.2016-05-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-012/"/>
  </url>

  <!-- resId: 8359520, doi: 10.16152/j.cnki.xdxbzr.2016-05-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-005/"/>
  </url>

  <!-- resId: 8358760, doi: 10.16152/j.cnki.xdxbzr.2016-05-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-009/"/>
  </url>

  <!-- resId: 8358780, doi: 10.16152/j.cnki.xdxbzr.2016-05-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-017/"/>
  </url>

  <!-- resId: 8359071, doi: 10.16152/j.cnki.xdxbzr.2016-05-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-027/"/>
  </url>

  <!-- resId: 8358602 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358602/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358602/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358602/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358602/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358602/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358602/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358602/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358602/"/>
  </url>

  <!-- resId: 8358605, doi: 10.16152/j.cnki.xdxbzr.2016-05-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-006/"/>
  </url>

  <!-- resId: 8358615, doi: 10.16152/j.cnki.xdxbzr.2016-05-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-002/"/>
  </url>

  <!-- resId: 8358871, doi: 10.16152/j.cnki.xdxbzr.2016-05-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-001/"/>
  </url>

  <!-- resId: 8358631, doi: 10.16152/j.cnki.xdxbzr.2016-05-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-003/"/>
  </url>

  <!-- resId: 8358894, doi: 10.16152/j.cnki.xdxbzr.2016-05-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-010/"/>
  </url>

  <!-- resId: 8358640, doi: 10.16152/j.cnki.xdxbzr.2016-05-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-011/"/>
  </url>

  <!-- resId: 8359417, doi: 10.16152/j.cnki.xdxbzr.2016-05-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/</loc>
    <lastmod>2021-04-13T13:38:59+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-05-014/"/>
  </url>

  <!-- resId: 8360449, doi: 10.16152/j.cnki.xdxbzr.2016-04-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-025/"/>
  </url>

  <!-- resId: 8360711, doi: 10.16152/j.cnki.xdxbzr.2016-04-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-027/"/>
  </url>

  <!-- resId: 8360462, doi: 10.16152/j.cnki.xdxbzr.2016-04-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-024/"/>
  </url>

  <!-- resId: 8360719, doi: 10.16152/j.cnki.xdxbzr.2016-04-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-010/"/>
  </url>

  <!-- resId: 8360473, doi: 10.16152/j.cnki.xdxbzr.2016-04-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-014/"/>
  </url>

  <!-- resId: 8360733, doi: 10.16152/j.cnki.xdxbzr.2016-04-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-016/"/>
  </url>

  <!-- resId: 8360486, doi: 10.16152/j.cnki.xdxbzr.2016-04-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-005/"/>
  </url>

  <!-- resId: 8360504, doi: 10.16152/j.cnki.xdxbzr.2016-04-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-017/"/>
  </url>

  <!-- resId: 8360765, doi: 10.16152/j.cnki.xdxbzr.2016-04-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-012/"/>
  </url>

  <!-- resId: 8360517, doi: 10.16152/j.cnki.xdxbzr.2016-04-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-006/"/>
  </url>

  <!-- resId: 8360535, doi: 10.16152/j.cnki.xdxbzr.2016-04-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-020/"/>
  </url>

  <!-- resId: 8360555, doi: 10.16152/j.cnki.xdxbzr.2016-04-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-029/"/>
  </url>

  <!-- resId: 8360570, doi: 10.16152/j.cnki.xdxbzr.2016-04-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-007/"/>
  </url>

  <!-- resId: 8360583, doi: 10.16152/j.cnki.xdxbzr.2016-04-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-001/"/>
  </url>

  <!-- resId: 8360331, doi: 10.16152/j.cnki.xdxbzr.2016-04-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-013/"/>
  </url>

  <!-- resId: 8360342, doi: 10.16152/j.cnki.xdxbzr.2016-04-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-026/"/>
  </url>

  <!-- resId: 8360598, doi: 10.16152/j.cnki.xdxbzr.2016-04-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-003/"/>
  </url>

  <!-- resId: 8360609, doi: 10.16152/j.cnki.xdxbzr.2016-04-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-002/"/>
  </url>

  <!-- resId: 8360354, doi: 10.16152/j.cnki.xdxbzr.2016-04-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-008/"/>
  </url>

  <!-- resId: 8360618, doi: 10.16152/j.cnki.xdxbzr.2016-04-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-021/"/>
  </url>

  <!-- resId: 8360369, doi: 10.16152/j.cnki.xdxbzr.2016-04-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-004/"/>
  </url>

  <!-- resId: 8360632, doi: 10.16152/j.cnki.xdxbzr.2016-04-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-009/"/>
  </url>

  <!-- resId: 8360385, doi: 10.16152/j.cnki.xdxbzr.2016-04-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-015/"/>
  </url>

  <!-- resId: 8360647, doi: 10.16152/j.cnki.xdxbzr.2016-04-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-011/"/>
  </url>

  <!-- resId: 8360402 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360402/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360402/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360402/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360402/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360402/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360402/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360402/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360402/"/>
  </url>

  <!-- resId: 8360660, doi: 10.16152/j.cnki.xdxbzr.2016-04-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-018/"/>
  </url>

  <!-- resId: 8360405, doi: 10.16152/j.cnki.xdxbzr.2016-04-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-019/"/>
  </url>

  <!-- resId: 8360423, doi: 10.16152/j.cnki.xdxbzr.2016-04-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-028/"/>
  </url>

  <!-- resId: 8360680, doi: 10.16152/j.cnki.xdxbzr.2016-04-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-022/"/>
  </url>

  <!-- resId: 8360434, doi: 10.16152/j.cnki.xdxbzr.2016-04-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/</loc>
    <lastmod>2021-04-13T13:39:03+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-04-023/"/>
  </url>

  <!-- resId: 8358407, doi: 10.16152/j.cnki.xdxbzr.2016-03-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-002/"/>
  </url>

  <!-- resId: 8359444, doi: 10.16152/j.cnki.xdxbzr.2016-03-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-019/"/>
  </url>

  <!-- resId: 8358421, doi: 10.16152/j.cnki.xdxbzr.2016-03-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-018/"/>
  </url>

  <!-- resId: 8358440, doi: 10.16152/j.cnki.xdxbzr.2016-03-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-015/"/>
  </url>

  <!-- resId: 8358453, doi: 10.16152/j.cnki.xdxbzr.2016-03-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-023/"/>
  </url>

  <!-- resId: 8358464, doi: 10.16152/j.cnki.xdxbzr.2016-03-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-014/"/>
  </url>

  <!-- resId: 8359241, doi: 10.16152/j.cnki.xdxbzr.2016-03-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-024/"/>
  </url>

  <!-- resId: 8358474, doi: 10.16152/j.cnki.xdxbzr.2016-03-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-016/"/>
  </url>

  <!-- resId: 8358494, doi: 10.16152/j.cnki.xdxbzr.2016-03-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-025/"/>
  </url>

  <!-- resId: 8359267, doi: 10.16152/j.cnki.xdxbzr.2016-03-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-007/"/>
  </url>

  <!-- resId: 8358507 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358507/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358507/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358507/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358507/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358507/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358507/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358507/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358507/"/>
  </url>

  <!-- resId: 8358510, doi: 10.16152/j.cnki.xdxbzr.2016-03-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-017/"/>
  </url>

  <!-- resId: 8359283, doi: 10.16152/j.cnki.xdxbzr.2016-03-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-011/"/>
  </url>

  <!-- resId: 8358525, doi: 10.16152/j.cnki.xdxbzr.2016-03-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-026/"/>
  </url>

  <!-- resId: 8359294, doi: 10.16152/j.cnki.xdxbzr.2016-03-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-021/"/>
  </url>

  <!-- resId: 8358802, doi: 10.16152/j.cnki.xdxbzr.2016-03-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-005/"/>
  </url>

  <!-- resId: 8358548, doi: 10.16152/j.cnki.xdxbzr.2016-03-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-008/"/>
  </url>

  <!-- resId: 8358814, doi: 10.16152/j.cnki.xdxbzr.2016-03-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-004/"/>
  </url>

  <!-- resId: 8358560, doi: 10.16152/j.cnki.xdxbzr.2016-03-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-020/"/>
  </url>

  <!-- resId: 8358824, doi: 10.16152/j.cnki.xdxbzr.2016-03-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-010/"/>
  </url>

  <!-- resId: 8358575 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358575/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358575/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358575/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358575/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358575/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358575/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358575/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358575/"/>
  </url>

  <!-- resId: 8358578, doi: 10.16152/j.cnki.xdxbzr.2016-03-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-022/"/>
  </url>

  <!-- resId: 8358844, doi: 10.16152/j.cnki.xdxbzr.2016-03-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-013/"/>
  </url>

  <!-- resId: 8358598 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358598/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358598/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358598/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358598/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358598/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358598/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358598/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358598/"/>
  </url>

  <!-- resId: 8358859, doi: 10.16152/j.cnki.xdxbzr.2016-03-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-028/"/>
  </url>

  <!-- resId: 8358349, doi: 10.16152/j.cnki.xdxbzr.2016-03-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-003/"/>
  </url>

  <!-- resId: 8358362 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358362/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358362/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358362/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358362/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358362/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358362/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358362/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358362/"/>
  </url>

  <!-- resId: 8358365, doi: 10.16152/j.cnki.xdxbzr.2016-03-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-001/"/>
  </url>

  <!-- resId: 8358881, doi: 10.16152/j.cnki.xdxbzr.2016-03-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-009/"/>
  </url>

  <!-- resId: 8358376, doi: 10.16152/j.cnki.xdxbzr.2016-03-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-006/"/>
  </url>

  <!-- resId: 8358387 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358387/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358387/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358387/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358387/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358387/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358387/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358387/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358387/"/>
  </url>

  <!-- resId: 8358390, doi: 10.16152/j.cnki.xdxbzr.2016-03-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-012/"/>
  </url>

  <!-- resId: 8358911, doi: 10.16152/j.cnki.xdxbzr.2016-03-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/</loc>
    <lastmod>2021-04-13T13:38:58+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-03-027/"/>
  </url>

  <!-- resId: 8359936 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359936/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359936/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359936/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359936/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359936/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359936/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359936/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359936/"/>
  </url>

  <!-- resId: 8359939, doi: 10.16152/j.cnki.xdxbzr.2016-02-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-004/"/>
  </url>

  <!-- resId: 8360204, doi: 10.16152/j.cnki.xdxbzr.2016-02-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-005/"/>
  </url>

  <!-- resId: 8359953 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359953/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359953/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359953/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359953/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359953/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359953/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359953/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359953/"/>
  </url>

  <!-- resId: 8359956, doi: 10.16152/j.cnki.xdxbzr.2016-02-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-008/"/>
  </url>

  <!-- resId: 8360220, doi: 10.16152/j.cnki.xdxbzr.2016-02-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-012/"/>
  </url>

  <!-- resId: 8359971 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359971/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359971/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359971/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359971/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359971/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359971/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359971/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359971/"/>
  </url>

  <!-- resId: 8359974, doi: 10.16152/j.cnki.xdxbzr.2016-02-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-023/"/>
  </url>

  <!-- resId: 8360232, doi: 10.16152/j.cnki.xdxbzr.2016-02-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-002/"/>
  </url>

  <!-- resId: 8360749, doi: 10.16152/j.cnki.xdxbzr.2016-02-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-006/"/>
  </url>

  <!-- resId: 8360244, doi: 10.16152/j.cnki.xdxbzr.2016-02-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-017/"/>
  </url>

  <!-- resId: 8359991, doi: 10.16152/j.cnki.xdxbzr.2016-02-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-011/"/>
  </url>

  <!-- resId: 8360259, doi: 10.16152/j.cnki.xdxbzr.2016-02-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-013/"/>
  </url>

  <!-- resId: 8360006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360006/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360006/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360006/"/>
  </url>

  <!-- resId: 8360009, doi: 10.16152/j.cnki.xdxbzr.2016-02-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-010/"/>
  </url>

  <!-- resId: 8360267, doi: 10.16152/j.cnki.xdxbzr.2016-02-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-001/"/>
  </url>

  <!-- resId: 8360278, doi: 10.16152/j.cnki.xdxbzr.2016-02-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-016/"/>
  </url>

  <!-- resId: 8360025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360025/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360025/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360025/"/>
  </url>

  <!-- resId: 8360028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360028/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360028/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360028/"/>
  </url>

  <!-- resId: 8360031, doi: 10.16152/j.cnki.xdxbzr.2016-02-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-025/"/>
  </url>

  <!-- resId: 8360297, doi: 10.16152/j.cnki.xdxbzr.2016-02-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-015/"/>
  </url>

  <!-- resId: 8360043 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360043/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360043/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360043/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360043/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360043/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360043/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360043/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360043/"/>
  </url>

  <!-- resId: 8360046, doi: 10.16152/j.cnki.xdxbzr.2016-02-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-027/"/>
  </url>

  <!-- resId: 8360308, doi: 10.16152/j.cnki.xdxbzr.2016-02-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-020/"/>
  </url>

  <!-- resId: 8360062, doi: 10.16152/j.cnki.xdxbzr.2016-02-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-007/"/>
  </url>

  <!-- resId: 8360074, doi: 10.16152/j.cnki.xdxbzr.2016-02-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-018/"/>
  </url>

  <!-- resId: 8360089 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8360089/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360089/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360089/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360089/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8360089/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8360089/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8360089/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8360089/"/>
  </url>

  <!-- resId: 8360092, doi: 10.16152/j.cnki.xdxbzr.2016-02-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-026/"/>
  </url>

  <!-- resId: 8360104, doi: 10.16152/j.cnki.xdxbzr.2016-02-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-028/"/>
  </url>

  <!-- resId: 8360108, doi: 10.16152/j.cnki.xdxbzr.2016-02-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-021/"/>
  </url>

  <!-- resId: 8360122, doi: 10.16152/j.cnki.xdxbzr.2016-02-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-019/"/>
  </url>

  <!-- resId: 8360139, doi: 10.16152/j.cnki.xdxbzr.2016-02-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-022/"/>
  </url>

  <!-- resId: 8360155, doi: 10.16152/j.cnki.xdxbzr.2016-02-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-003/"/>
  </url>

  <!-- resId: 8360166, doi: 10.16152/j.cnki.xdxbzr.2016-02-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-024/"/>
  </url>

  <!-- resId: 8359923, doi: 10.16152/j.cnki.xdxbzr.2016-02-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-009/"/>
  </url>

  <!-- resId: 8360183, doi: 10.16152/j.cnki.xdxbzr.2016-02-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/</loc>
    <lastmod>2021-04-13T13:39:02+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-02-014/"/>
  </url>

  <!-- resId: 8359686 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359686/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359686/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359686/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359686/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359686/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359686/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359686/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359686/"/>
  </url>

  <!-- resId: 8359689, doi: 10.16152/j.cnki.xdxbzr.2016-01-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-004/"/>
  </url>

  <!-- resId: 8359705, doi: 10.16152/j.cnki.xdxbzr.2016-01-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-018/"/>
  </url>

  <!-- resId: 8359725, doi: 10.16152/j.cnki.xdxbzr.2016-01-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-007/"/>
  </url>

  <!-- resId: 8359737, doi: 10.16152/j.cnki.xdxbzr.2016-01-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-001/"/>
  </url>

  <!-- resId: 8359758, doi: 10.16152/j.cnki.xdxbzr.2016-01-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-024/"/>
  </url>

  <!-- resId: 8359772, doi: 10.16152/j.cnki.xdxbzr.2016-01-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-012/"/>
  </url>

  <!-- resId: 8359785, doi: 10.16152/j.cnki.xdxbzr.2016-01-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-017/"/>
  </url>

  <!-- resId: 8359534, doi: 10.16152/j.cnki.xdxbzr.2016-01-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-006/"/>
  </url>

  <!-- resId: 8359800, doi: 10.16152/j.cnki.xdxbzr.2016-01-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-015/"/>
  </url>

  <!-- resId: 8359550, doi: 10.16152/j.cnki.xdxbzr.2016-01-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-008/"/>
  </url>

  <!-- resId: 8359816, doi: 10.16152/j.cnki.xdxbzr.2016-01-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-003/"/>
  </url>

  <!-- resId: 8359562, doi: 10.16152/j.cnki.xdxbzr.2016-01-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-020/"/>
  </url>

  <!-- resId: 8359831, doi: 10.16152/j.cnki.xdxbzr.2016-01-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-025/"/>
  </url>

  <!-- resId: 8359578, doi: 10.16152/j.cnki.xdxbzr.2016-01-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-002/"/>
  </url>

  <!-- resId: 8359839, doi: 10.16152/j.cnki.xdxbzr.2016-01-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-009/"/>
  </url>

  <!-- resId: 8359592, doi: 10.16152/j.cnki.xdxbzr.2016-01-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-023/"/>
  </url>

  <!-- resId: 8359854, doi: 10.16152/j.cnki.xdxbzr.2016-01-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-021/"/>
  </url>

  <!-- resId: 8359863 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8359863/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359863/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359863/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359863/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8359863/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8359863/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8359863/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8359863/"/>
  </url>

  <!-- resId: 8359610, doi: 10.16152/j.cnki.xdxbzr.2016-01-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-005/"/>
  </url>

  <!-- resId: 8359866, doi: 10.16152/j.cnki.xdxbzr.2016-01-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-010/"/>
  </url>

  <!-- resId: 8359878, doi: 10.16152/j.cnki.xdxbzr.2016-01-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-016/"/>
  </url>

  <!-- resId: 8359633, doi: 10.16152/j.cnki.xdxbzr.2016-01-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-022/"/>
  </url>

  <!-- resId: 8359890, doi: 10.16152/j.cnki.xdxbzr.2016-01-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-011/"/>
  </url>

  <!-- resId: 8359644, doi: 10.16152/j.cnki.xdxbzr.2016-01-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-026/"/>
  </url>

  <!-- resId: 8359903, doi: 10.16152/j.cnki.xdxbzr.2016-01-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-014/"/>
  </url>

  <!-- resId: 8359658, doi: 10.16152/j.cnki.xdxbzr.2016-01-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-019/"/>
  </url>

  <!-- resId: 8359673, doi: 10.16152/j.cnki.xdxbzr.2016-01-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/</loc>
    <lastmod>2021-04-13T13:39:01+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2016-01-013/"/>
  </url>

  <!-- resId: 8356383 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356383/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356383/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356383/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356383/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356383/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356383/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356383/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356383/"/>
  </url>

  <!-- resId: 8356386, doi: 10.16152/j.cnki.xdxbzr.2015-06-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-019/"/>
  </url>

  <!-- resId: 8356403, doi: 10.16152/j.cnki.xdxbzr.2015-06-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-014/"/>
  </url>

  <!-- resId: 8356922, doi: 10.16152/j.cnki.xdxbzr.2015-06-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-010/"/>
  </url>

  <!-- resId: 8356412, doi: 10.16152/j.cnki.xdxbzr.2015-06-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-022/"/>
  </url>

  <!-- resId: 8356677, doi: 10.16152/j.cnki.xdxbzr.2015-06-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-001/"/>
  </url>

  <!-- resId: 8356423, doi: 10.16152/j.cnki.xdxbzr.2015-06-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-020/"/>
  </url>

  <!-- resId: 8356435 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356435/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356435/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356435/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356435/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356435/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356435/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356435/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356435/"/>
  </url>

  <!-- resId: 8356438, doi: 10.16152/j.cnki.xdxbzr.2015-06-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-025/"/>
  </url>

  <!-- resId: 8357728, doi: 10.16152/j.cnki.xdxbzr.2015-06-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-002/"/>
  </url>

  <!-- resId: 8356449, doi: 10.16152/j.cnki.xdxbzr.2015-06-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-026/"/>
  </url>

  <!-- resId: 8356459, doi: 10.16152/j.cnki.xdxbzr.2015-06-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-028/"/>
  </url>

  <!-- resId: 8356473, doi: 10.16152/j.cnki.xdxbzr.2015-06-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-029/"/>
  </url>

  <!-- resId: 8356734, doi: 10.16152/j.cnki.xdxbzr.2015-06-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-024/"/>
  </url>

  <!-- resId: 8357792, doi: 10.16152/j.cnki.xdxbzr.2015-06-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-012/"/>
  </url>

  <!-- resId: 8357539, doi: 10.16152/j.cnki.xdxbzr.2015-06-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-027/"/>
  </url>

  <!-- resId: 8357291, doi: 10.16152/j.cnki.xdxbzr.2015-06-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-007/"/>
  </url>

  <!-- resId: 8357804, doi: 10.16152/j.cnki.xdxbzr.2015-06-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-016/"/>
  </url>

  <!-- resId: 8356545, doi: 10.16152/j.cnki.xdxbzr.2015-06-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-017/"/>
  </url>

  <!-- resId: 8356815, doi: 10.16152/j.cnki.xdxbzr.2015-06-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-015/"/>
  </url>

  <!-- resId: 8356562, doi: 10.16152/j.cnki.xdxbzr.2015-06-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-011/"/>
  </url>

  <!-- resId: 8356322, doi: 10.16152/j.cnki.xdxbzr.2015-06-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-004/"/>
  </url>

  <!-- resId: 8356582, doi: 10.16152/j.cnki.xdxbzr.2015-06-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-005/"/>
  </url>

  <!-- resId: 8357865, doi: 10.16152/j.cnki.xdxbzr.2015-06-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-023/"/>
  </url>

  <!-- resId: 8356332, doi: 10.16152/j.cnki.xdxbzr.2015-06-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-009/"/>
  </url>

  <!-- resId: 8356844, doi: 10.16152/j.cnki.xdxbzr.2015-06-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-018/"/>
  </url>

  <!-- resId: 8357359, doi: 10.16152/j.cnki.xdxbzr.2015-06-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-003/"/>
  </url>

  <!-- resId: 8356595, doi: 10.16152/j.cnki.xdxbzr.2015-06-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-006/"/>
  </url>

  <!-- resId: 8356344, doi: 10.16152/j.cnki.xdxbzr.2015-06-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-013/"/>
  </url>

  <!-- resId: 8356859, doi: 10.16152/j.cnki.xdxbzr.2015-06-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-008/"/>
  </url>

  <!-- resId: 8357375, doi: 10.16152/j.cnki.xdxbzr.2015-06-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/</loc>
    <lastmod>2021-04-13T13:38:54+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-06-021/"/>
  </url>

  <!-- resId: 8355594 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355594/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355594/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355594/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355594/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355594/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355594/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355594/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355594/"/>
  </url>

  <!-- resId: 8355597, doi: 10.16152/j.cnki.xdxbzr.2015-05-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-014/"/>
  </url>

  <!-- resId: 8355610, doi: 10.16152/j.cnki.xdxbzr.2015-05-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-019/"/>
  </url>

  <!-- resId: 8355624, doi: 10.16152/j.cnki.xdxbzr.2015-05-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-021/"/>
  </url>

  <!-- resId: 8356149, doi: 10.16152/j.cnki.xdxbzr.2015-05-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-007/"/>
  </url>

  <!-- resId: 8355639, doi: 10.16152/j.cnki.xdxbzr.2015-05-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-002/"/>
  </url>

  <!-- resId: 8355652, doi: 10.16152/j.cnki.xdxbzr.2015-05-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-028/"/>
  </url>

  <!-- resId: 8356167, doi: 10.16152/j.cnki.xdxbzr.2015-05-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-004/"/>
  </url>

  <!-- resId: 8355669, doi: 10.16152/j.cnki.xdxbzr.2015-05-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-027/"/>
  </url>

  <!-- resId: 8356190, doi: 10.16152/j.cnki.xdxbzr.2015-05-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-005/"/>
  </url>

  <!-- resId: 8355682, doi: 10.16152/j.cnki.xdxbzr.2015-05-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-011/"/>
  </url>

  <!-- resId: 8356203, doi: 10.16152/j.cnki.xdxbzr.2015-05-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-006/"/>
  </url>

  <!-- resId: 8355695, doi: 10.16152/j.cnki.xdxbzr.2015-05-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-012/"/>
  </url>

  <!-- resId: 8355705, doi: 10.16152/j.cnki.xdxbzr.2015-05-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-008/"/>
  </url>

  <!-- resId: 8355719, doi: 10.16152/j.cnki.xdxbzr.2015-05-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-029/"/>
  </url>

  <!-- resId: 8356487, doi: 10.16152/j.cnki.xdxbzr.2015-05-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-009/"/>
  </url>

  <!-- resId: 8357004, doi: 10.16152/j.cnki.xdxbzr.2015-05-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-025/"/>
  </url>

  <!-- resId: 8355730 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355730/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355730/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355730/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355730/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355730/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355730/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355730/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355730/"/>
  </url>

  <!-- resId: 8355733, doi: 10.16152/j.cnki.xdxbzr.2015-05-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-017/"/>
  </url>

  <!-- resId: 8357781, doi: 10.16152/j.cnki.xdxbzr.2015-05-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-016/"/>
  </url>

  <!-- resId: 8356259 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356259/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356259/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356259/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356259/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356259/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356259/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356259/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356259/"/>
  </url>

  <!-- resId: 8356262 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356262/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356262/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356262/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356262/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356262/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356262/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356262/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356262/"/>
  </url>

  <!-- resId: 8355754, doi: 10.16152/j.cnki.xdxbzr.2015-05-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-024/"/>
  </url>

  <!-- resId: 8355770, doi: 10.16152/j.cnki.xdxbzr.2015-05-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-026/"/>
  </url>

  <!-- resId: 8357318, doi: 10.16152/j.cnki.xdxbzr.2015-05-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-015/"/>
  </url>

  <!-- resId: 8355783, doi: 10.16152/j.cnki.xdxbzr.2015-05-030 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-030/"/>
  </url>

  <!-- resId: 8355794, doi: 10.16152/j.cnki.xdxbzr.2015-05-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-020/"/>
  </url>

  <!-- resId: 8357336, doi: 10.16152/j.cnki.xdxbzr.2015-05-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-023/"/>
  </url>

  <!-- resId: 8355551, doi: 10.16152/j.cnki.xdxbzr.2015-05-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-001/"/>
  </url>

  <!-- resId: 8355810, doi: 10.16152/j.cnki.xdxbzr.2015-05-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-022/"/>
  </url>

  <!-- resId: 8357349, doi: 10.16152/j.cnki.xdxbzr.2015-05-031 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-031/"/>
  </url>

  <!-- resId: 8355564 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355564/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355564/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355564/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355564/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355564/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355564/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355564/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355564/"/>
  </url>

  <!-- resId: 8355567 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355567/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355567/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355567/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355567/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355567/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355567/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355567/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355567/"/>
  </url>

  <!-- resId: 8355824, doi: 10.16152/j.cnki.xdxbzr.2015-05-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-018/"/>
  </url>

  <!-- resId: 8355570, doi: 10.16152/j.cnki.xdxbzr.2015-05-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-010/"/>
  </url>

  <!-- resId: 8355581, doi: 10.16152/j.cnki.xdxbzr.2015-05-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-013/"/>
  </url>

  <!-- resId: 8355837, doi: 10.16152/j.cnki.xdxbzr.2015-05-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/</loc>
    <lastmod>2021-04-13T13:38:52+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-05-003/"/>
  </url>

  <!-- resId: 8356102 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356102/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356102/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356102/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356102/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356102/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356102/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356102/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356102/"/>
  </url>

  <!-- resId: 8357384, doi: 10.16152/j.cnki.xdxbzr.2015-04-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-003/"/>
  </url>

  <!-- resId: 8356105, doi: 10.16152/j.cnki.xdxbzr.2015-04-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-028/"/>
  </url>

  <!-- resId: 8356362, doi: 10.16152/j.cnki.xdxbzr.2015-04-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-008/"/>
  </url>

  <!-- resId: 8355852, doi: 10.16152/j.cnki.xdxbzr.2015-04-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-004/"/>
  </url>

  <!-- resId: 8356625, doi: 10.16152/j.cnki.xdxbzr.2015-04-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-029/"/>
  </url>

  <!-- resId: 8357650, doi: 10.16152/j.cnki.xdxbzr.2015-04-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-014/"/>
  </url>

  <!-- resId: 8356116, doi: 10.16152/j.cnki.xdxbzr.2015-04-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-017/"/>
  </url>

  <!-- resId: 8355868 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355868/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355868/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355868/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355868/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355868/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355868/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355868/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355868/"/>
  </url>

  <!-- resId: 8355871 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355871/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355871/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355871/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355871/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355871/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355871/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355871/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355871/"/>
  </url>

  <!-- resId: 8355874, doi: 10.16152/j.cnki.xdxbzr.2015-04-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-011/"/>
  </url>

  <!-- resId: 8356130, doi: 10.16152/j.cnki.xdxbzr.2015-04-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-009/"/>
  </url>

  <!-- resId: 8357411, doi: 10.16152/j.cnki.xdxbzr.2015-04-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-001/"/>
  </url>

  <!-- resId: 8355888, doi: 10.16152/j.cnki.xdxbzr.2015-04-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-015/"/>
  </url>

  <!-- resId: 8355901, doi: 10.16152/j.cnki.xdxbzr.2015-04-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-013/"/>
  </url>

  <!-- resId: 8355918, doi: 10.16152/j.cnki.xdxbzr.2015-04-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-012/"/>
  </url>

  <!-- resId: 8356180 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356180/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356180/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356180/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356180/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356180/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356180/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356180/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356180/"/>
  </url>

  <!-- resId: 8355930, doi: 10.16152/j.cnki.xdxbzr.2015-04-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-021/"/>
  </url>

  <!-- resId: 8355946, doi: 10.16152/j.cnki.xdxbzr.2015-04-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-023/"/>
  </url>

  <!-- resId: 8355964, doi: 10.16152/j.cnki.xdxbzr.2015-04-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-026/"/>
  </url>

  <!-- resId: 8356221, doi: 10.16152/j.cnki.xdxbzr.2015-04-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-024/"/>
  </url>

  <!-- resId: 8355975 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8355975/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355975/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355975/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355975/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8355975/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8355975/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8355975/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8355975/"/>
  </url>

  <!-- resId: 8355978, doi: 10.16152/j.cnki.xdxbzr.2015-04-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-007/"/>
  </url>

  <!-- resId: 8356236, doi: 10.16152/j.cnki.xdxbzr.2015-04-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-025/"/>
  </url>

  <!-- resId: 8355988, doi: 10.16152/j.cnki.xdxbzr.2015-04-030 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-030/"/>
  </url>

  <!-- resId: 8356248, doi: 10.16152/j.cnki.xdxbzr.2015-04-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-027/"/>
  </url>

  <!-- resId: 8356001, doi: 10.16152/j.cnki.xdxbzr.2015-04-031 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-031/"/>
  </url>

  <!-- resId: 8356773, doi: 10.16152/j.cnki.xdxbzr.2015-04-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-020/"/>
  </url>

  <!-- resId: 8356265, doi: 10.16152/j.cnki.xdxbzr.2015-04-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-019/"/>
  </url>

  <!-- resId: 8356014, doi: 10.16152/j.cnki.xdxbzr.2015-04-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-010/"/>
  </url>

  <!-- resId: 8356024, doi: 10.16152/j.cnki.xdxbzr.2015-04-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-002/"/>
  </url>

  <!-- resId: 8356280, doi: 10.16152/j.cnki.xdxbzr.2015-04-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-022/"/>
  </url>

  <!-- resId: 8356294, doi: 10.16152/j.cnki.xdxbzr.2015-04-032 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-032/"/>
  </url>

  <!-- resId: 8356046, doi: 10.16152/j.cnki.xdxbzr.2015-04-033 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-033/"/>
  </url>

  <!-- resId: 8356308, doi: 10.16152/j.cnki.xdxbzr.2015-04-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-005/"/>
  </url>

  <!-- resId: 8357076, doi: 10.16152/j.cnki.xdxbzr.2015-04-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-006/"/>
  </url>

  <!-- resId: 8356058, doi: 10.16152/j.cnki.xdxbzr.2015-04-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-016/"/>
  </url>

  <!-- resId: 8356318 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356318/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356318/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356318/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356318/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356318/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356318/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356318/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356318/"/>
  </url>

  <!-- resId: 8356073, doi: 10.16152/j.cnki.xdxbzr.2015-04-034 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-034/"/>
  </url>

  <!-- resId: 8356087, doi: 10.16152/j.cnki.xdxbzr.2015-04-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/</loc>
    <lastmod>2021-04-13T13:38:53+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-04-018/"/>
  </url>

  <!-- resId: 8357635, doi: 10.16152/j.cnki.xdxbzr.2015-03-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-020/"/>
  </url>

  <!-- resId: 8357126, doi: 10.16152/j.cnki.xdxbzr.2015-03-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-014/"/>
  </url>

  <!-- resId: 8357139, doi: 10.16152/j.cnki.xdxbzr.2015-03-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-021/"/>
  </url>

  <!-- resId: 8357667, doi: 10.16152/j.cnki.xdxbzr.2015-03-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-027/"/>
  </url>

  <!-- resId: 8357158 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357158/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357158/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357158/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357158/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357158/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357158/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357158/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357158/"/>
  </url>

  <!-- resId: 8357161, doi: 10.16152/j.cnki.xdxbzr.2015-03-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-010/"/>
  </url>

  <!-- resId: 8357681, doi: 10.16152/j.cnki.xdxbzr.2015-03-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-007/"/>
  </url>

  <!-- resId: 8357175, doi: 10.16152/j.cnki.xdxbzr.2015-03-031 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-031/"/>
  </url>

  <!-- resId: 8357179, doi: 10.16152/j.cnki.xdxbzr.2015-03-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-002/"/>
  </url>

  <!-- resId: 8357697, doi: 10.16152/j.cnki.xdxbzr.2015-03-030 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-030/"/>
  </url>

  <!-- resId: 8357193, doi: 10.16152/j.cnki.xdxbzr.2015-03-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-015/"/>
  </url>

  <!-- resId: 8357709, doi: 10.16152/j.cnki.xdxbzr.2015-03-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-025/"/>
  </url>

  <!-- resId: 8357206, doi: 10.16152/j.cnki.xdxbzr.2015-03-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-004/"/>
  </url>

  <!-- resId: 8357221, doi: 10.16152/j.cnki.xdxbzr.2015-03-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-024/"/>
  </url>

  <!-- resId: 8357478 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357478/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357478/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357478/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357478/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357478/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357478/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357478/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357478/"/>
  </url>

  <!-- resId: 8357738, doi: 10.16152/j.cnki.xdxbzr.2015-03-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-018/"/>
  </url>

  <!-- resId: 8357754 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357754/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357754/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357754/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357754/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357754/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357754/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357754/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357754/"/>
  </url>

  <!-- resId: 8357757, doi: 10.16152/j.cnki.xdxbzr.2015-03-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-019/"/>
  </url>

  <!-- resId: 8357248, doi: 10.16152/j.cnki.xdxbzr.2015-03-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-023/"/>
  </url>

  <!-- resId: 8357506, doi: 10.16152/j.cnki.xdxbzr.2015-03-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-026/"/>
  </url>

  <!-- resId: 8357768, doi: 10.16152/j.cnki.xdxbzr.2015-03-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-022/"/>
  </url>

  <!-- resId: 8357261, doi: 10.16152/j.cnki.xdxbzr.2015-03-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-029/"/>
  </url>

  <!-- resId: 8357272, doi: 10.16152/j.cnki.xdxbzr.2015-03-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-028/"/>
  </url>

  <!-- resId: 8357528, doi: 10.16152/j.cnki.xdxbzr.2015-03-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-005/"/>
  </url>

  <!-- resId: 8357043 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357043/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357043/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357043/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357043/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357043/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357043/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357043/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357043/"/>
  </url>

  <!-- resId: 8357046 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357046/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357046/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357046/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357046/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357046/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357046/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357046/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357046/"/>
  </url>

  <!-- resId: 8357305, doi: 10.16152/j.cnki.xdxbzr.2015-03-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-009/"/>
  </url>

  <!-- resId: 8357817, doi: 10.16152/j.cnki.xdxbzr.2015-03-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-008/"/>
  </url>

  <!-- resId: 8357563, doi: 10.16152/j.cnki.xdxbzr.2015-03-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-006/"/>
  </url>

  <!-- resId: 8357574, doi: 10.16152/j.cnki.xdxbzr.2015-03-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-012/"/>
  </url>

  <!-- resId: 8357067 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357067/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357067/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357067/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357067/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357067/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357067/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357067/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357067/"/>
  </url>

  <!-- resId: 8357070 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357070/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357070/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357070/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357070/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357070/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357070/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357070/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357070/"/>
  </url>

  <!-- resId: 8357073 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357073/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357073/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357073/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357073/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357073/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357073/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357073/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357073/"/>
  </url>

  <!-- resId: 8357589, doi: 10.16152/j.cnki.xdxbzr.2015-03-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-013/"/>
  </url>

  <!-- resId: 8357846, doi: 10.16152/j.cnki.xdxbzr.2015-03-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-017/"/>
  </url>

  <!-- resId: 8357093, doi: 10.16152/j.cnki.xdxbzr.2015-03-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-003/"/>
  </url>

  <!-- resId: 8357608, doi: 10.16152/j.cnki.xdxbzr.2015-03-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-011/"/>
  </url>

  <!-- resId: 8357105 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357105/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357105/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357105/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357105/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357105/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357105/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357105/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357105/"/>
  </url>

  <!-- resId: 8357108, doi: 10.16152/j.cnki.xdxbzr.2015-03-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-016/"/>
  </url>

  <!-- resId: 8357622, doi: 10.16152/j.cnki.xdxbzr.2015-03-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/</loc>
    <lastmod>2021-04-13T13:38:56+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-03-001/"/>
  </url>

  <!-- resId: 8358144, doi: 10.16152/j.cnki.xdxbzr.2015-02-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-026/"/>
  </url>

  <!-- resId: 8357894, doi: 10.16152/j.cnki.xdxbzr.2015-02-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-003/"/>
  </url>

  <!-- resId: 8358155, doi: 10.16152/j.cnki.xdxbzr.2015-02-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-005/"/>
  </url>

  <!-- resId: 8357905, doi: 10.16152/j.cnki.xdxbzr.2015-02-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-006/"/>
  </url>

  <!-- resId: 8358169, doi: 10.16152/j.cnki.xdxbzr.2015-02-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-027/"/>
  </url>

  <!-- resId: 8357916, doi: 10.16152/j.cnki.xdxbzr.2015-02-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-007/"/>
  </url>

  <!-- resId: 8357926, doi: 10.16152/j.cnki.xdxbzr.2015-02-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-008/"/>
  </url>

  <!-- resId: 8358187, doi: 10.16152/j.cnki.xdxbzr.2015-02-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-019/"/>
  </url>

  <!-- resId: 8357936, doi: 10.16152/j.cnki.xdxbzr.2015-02-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-010/"/>
  </url>

  <!-- resId: 8357946, doi: 10.16152/j.cnki.xdxbzr.2015-02-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-018/"/>
  </url>

  <!-- resId: 8358206, doi: 10.16152/j.cnki.xdxbzr.2015-02-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-009/"/>
  </url>

  <!-- resId: 8357965, doi: 10.16152/j.cnki.xdxbzr.2015-02-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-013/"/>
  </url>

  <!-- resId: 8358227, doi: 10.16152/j.cnki.xdxbzr.2015-02-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-029/"/>
  </url>

  <!-- resId: 8357985, doi: 10.16152/j.cnki.xdxbzr.2015-02-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-024/"/>
  </url>

  <!-- resId: 8358244, doi: 10.16152/j.cnki.xdxbzr.2015-02-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-014/"/>
  </url>

  <!-- resId: 8358256, doi: 10.16152/j.cnki.xdxbzr.2015-02-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-021/"/>
  </url>

  <!-- resId: 8358002, doi: 10.16152/j.cnki.xdxbzr.2015-02-016 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-016/"/>
  </url>

  <!-- resId: 8358018, doi: 10.16152/j.cnki.xdxbzr.2015-02-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-012/"/>
  </url>

  <!-- resId: 8358276, doi: 10.16152/j.cnki.xdxbzr.2015-02-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-028/"/>
  </url>

  <!-- resId: 8358027, doi: 10.16152/j.cnki.xdxbzr.2015-02-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-025/"/>
  </url>

  <!-- resId: 8358038 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358038/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358038/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358038/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358038/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358038/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358038/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358038/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358038/"/>
  </url>

  <!-- resId: 8358296, doi: 10.16152/j.cnki.xdxbzr.2015-02-030 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-030/"/>
  </url>

  <!-- resId: 8358041, doi: 10.16152/j.cnki.xdxbzr.2015-02-031 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-031/"/>
  </url>

  <!-- resId: 8358309, doi: 10.16152/j.cnki.xdxbzr.2015-02-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-020/"/>
  </url>

  <!-- resId: 8358057, doi: 10.16152/j.cnki.xdxbzr.2015-02-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-017/"/>
  </url>

  <!-- resId: 8358073, doi: 10.16152/j.cnki.xdxbzr.2015-02-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-015/"/>
  </url>

  <!-- resId: 8358333, doi: 10.16152/j.cnki.xdxbzr.2015-02-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-023/"/>
  </url>

  <!-- resId: 8358092, doi: 10.16152/j.cnki.xdxbzr.2015-02-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-022/"/>
  </url>

  <!-- resId: 8358105, doi: 10.16152/j.cnki.xdxbzr.2015-02-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-011/"/>
  </url>

  <!-- resId: 8358119, doi: 10.16152/j.cnki.xdxbzr.2015-02-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-001/"/>
  </url>

  <!-- resId: 8358131, doi: 10.16152/j.cnki.xdxbzr.2015-02-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-002/"/>
  </url>

  <!-- resId: 8357882, doi: 10.16152/j.cnki.xdxbzr.2015-02-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-02-004/"/>
  </url>

  <!-- resId: 8358141 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8358141/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358141/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358141/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358141/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8358141/</loc>
    <lastmod>2021-04-13T13:38:57+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8358141/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8358141/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8358141/"/>
  </url>

  <!-- resId: 8356613, doi: 10.16152/j.cnki.xdxbzr.2015-01-006 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-006/"/>
  </url>

  <!-- resId: 8356871 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356871/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356871/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356871/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356871/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356871/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356871/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356871/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356871/"/>
  </url>

  <!-- resId: 8356874, doi: 10.16152/j.cnki.xdxbzr.2015-01-009 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-009/"/>
  </url>

  <!-- resId: 8357397, doi: 10.16152/j.cnki.xdxbzr.2015-01-023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-023/"/>
  </url>

  <!-- resId: 8356638, doi: 10.16152/j.cnki.xdxbzr.2015-01-007 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-007/"/>
  </url>

  <!-- resId: 8356895, doi: 10.16152/j.cnki.xdxbzr.2015-01-028 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-028/"/>
  </url>

  <!-- resId: 8356648, doi: 10.16152/j.cnki.xdxbzr.2015-01-004 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-004/"/>
  </url>

  <!-- resId: 8356904, doi: 10.16152/j.cnki.xdxbzr.2015-01-008 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-008/"/>
  </url>

  <!-- resId: 8357422 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357422/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357422/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357422/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357422/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357422/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357422/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357422/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357422/"/>
  </url>

  <!-- resId: 8357425 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8357425/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357425/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357425/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357425/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8357425/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8357425/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8357425/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8357425/"/>
  </url>

  <!-- resId: 8356659, doi: 10.16152/j.cnki.xdxbzr.2015-01-015 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-015/"/>
  </url>

  <!-- resId: 8357428, doi: 10.16152/j.cnki.xdxbzr.2015-01-031 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-031/"/>
  </url>

  <!-- resId: 8357448, doi: 10.16152/j.cnki.xdxbzr.2015-01-029 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-029/"/>
  </url>

  <!-- resId: 8356937, doi: 10.16152/j.cnki.xdxbzr.2015-01-021 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-021/"/>
  </url>

  <!-- resId: 8356692, doi: 10.16152/j.cnki.xdxbzr.2015-01-011 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-011/"/>
  </url>

  <!-- resId: 8357464, doi: 10.16152/j.cnki.xdxbzr.2015-01-022 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-022/"/>
  </url>

  <!-- resId: 8356961, doi: 10.16152/j.cnki.xdxbzr.2015-01-026 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-026/"/>
  </url>

  <!-- resId: 8356710, doi: 10.16152/j.cnki.xdxbzr.2015-01-024 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-024/"/>
  </url>

  <!-- resId: 8357481, doi: 10.16152/j.cnki.xdxbzr.2015-01-003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-003/"/>
  </url>

  <!-- resId: 8356972, doi: 10.16152/j.cnki.xdxbzr.2015-01-017 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-017/"/>
  </url>

  <!-- resId: 8356720, doi: 10.16152/j.cnki.xdxbzr.2015-01-025 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-025/"/>
  </url>

  <!-- resId: 8357233, doi: 10.16152/j.cnki.xdxbzr.2015-01-019 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-019/"/>
  </url>

  <!-- resId: 8357494, doi: 10.16152/j.cnki.xdxbzr.2015-01-010 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-010/"/>
  </url>

  <!-- resId: 8356988, doi: 10.16152/j.cnki.xdxbzr.2015-01-012 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-012/"/>
  </url>

  <!-- resId: 8356752, doi: 10.16152/j.cnki.xdxbzr.2015-01-032 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-032/"/>
  </url>

  <!-- resId: 8356499, doi: 10.16152/j.cnki.xdxbzr.2015-01-001 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-001/"/>
  </url>

  <!-- resId: 8357024, doi: 10.16152/j.cnki.xdxbzr.2015-01-014 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-014/"/>
  </url>

  <!-- resId: 8356513, doi: 10.16152/j.cnki.xdxbzr.2015-01-005 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-005/"/>
  </url>

  <!-- resId: 8357550, doi: 10.16152/j.cnki.xdxbzr.2015-01-030 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-030/"/>
  </url>

  <!-- resId: 8356528, doi: 10.16152/j.cnki.xdxbzr.2015-01-002 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-002/"/>
  </url>

  <!-- resId: 8356793, doi: 10.16152/j.cnki.xdxbzr.2015-01-018 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-018/"/>
  </url>

  <!-- resId: 8357049, doi: 10.16152/j.cnki.xdxbzr.2015-01-013 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-013/"/>
  </url>

  <!-- resId: 8357826, doi: 10.16152/j.cnki.xdxbzr.2015-01-020 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-020/"/>
  </url>

  <!-- resId: 8356812 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356812/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356812/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356812/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356812/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356812/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356812/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356812/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356812/"/>
  </url>

  <!-- resId: 8356832, doi: 10.16152/j.cnki.xdxbzr.2015-01-027 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2015-01-027/"/>
  </url>

  <!-- resId: 8356592 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/8356592/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356592/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356592/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356592/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/8356592/</loc>
    <lastmod>2021-04-13T13:38:55+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/8356592/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/8356592/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/8356592/"/>
  </url>

  <!-- resId: 8353792, doi: 10.16152/j.cnki.xdxbzr.2014.06.023 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.023/"/>
  </url>

  <!-- resId: 8353037, doi: 10.16152/j.cnki.xdxbzr.2014.06.003 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.003/"/>
  </url>

  <!-- resId: 8353553, doi: 10.16152/j.cnki.xdxbzr.2014.06.034 -->
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
  </url>
  <url>
    <loc>https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/</loc>
    <lastmod>2021-04-13T13:38:46+08:00</lastmod>
    <changefreq>monthly</changefreq>
    <priority>1.0</priority>
    <xhtml:link rel="alternate" hreflang="zh" href="https://xdxbzk.nwu.edu.cn/zh/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
    <xhtml:link rel="alternate" hreflang="en" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
    <xhtml:link rel="alternate" hreflang="x-default" href="https://xdxbzk.nwu.edu.cn/en/article/doi/10.16152/j.cnki.xdxbzr.2014.06.034/"/>
  </url>

</urlset>