它们遵循xml的基本设计原则之一，因此是XML文档，而且使用专门名称空间的词汇表。

Following one of the basic design principles of XML, these are XML documents that use specially-namespaced vocabularies.

youdao

在XML名称空间中，每种词汇表被称为一个名称空间，有专门的语法表示词汇表标记。

In XML namespaces each vocabulary is called a namespace and there is a special syntax for expressing vocabulary markers.

youdao

注意，对于变量名与其所映射的列的名称不相同的每个变量，会生成一个专门的标注。

Note that a special annotation is generated for every variable name that is different from its respective mapping column name. The annotation will be of the form.

youdao

The third derivative, unfortunately, was never given a name, and I don't know why.

遗憾的是三阶导数没有专门的名称,我也不知道这是为什么

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