改用实体代码  .

  是 HTML字符实体引用".XML 中没有用于不间断空格的命名实体，因此您使用代码  .

  is a HTML "character entity reference". There is no named entity for non-breaking space in XML, so you use the code  .

***包括 XML 和 HTML 实体的列表，你可以看到只有XML 中有 5 个预定义实体"，但 HTML 有超过 200 个.我还将指出 在 XSL 中创建一个空间 ( )，其中有很好的答案.

Wikipedia includes a list of XML and HTML entities, and you can see that there are only 5 "predefined entities" in XML, but HTML has over 200. I'll also point over to Creating a space ( ) in XSL which has excellent answers.