现在，我们向文档添加定制字段。这些定制字段通过向图书文档添加属性表类型来描述图书。

We now add custom fields to the documents that describe the books by attaching the property sheet type to the book document.

youdao

在创建了属性表类型之后，我们必须将它添加到文档类型，这样才能在文档中将该属性表类型用作定制字段。

After the property sheet type is created, we must add it to a document type, so that we can use this property sheet type as custom fields in a document.

youdao

如果想要添加自己的文档类型，就必须在添加新文档类型之前创建相应的Microsoft Word文档模板(. dot文件)和定义文件。

If you want to add your own document type, you must create the relevant Microsoft Word document template (.dot file) and a definition file before adding a new document type.

youdao