AXIOM provides a virtual document model it expands on demand, building only as much of the tree structure document model representation as has been requested by the client application.
AXIOM提供了一种可以按需扩展的虚拟文档模型，仅构建客户端应用程序所请求的树结构文档模型表示。
With these breakdowns, you can get the final tree structure named CPI breakdown model.
通过这样划分，最终可以得到一个树结构，它称为 CPI 细分模型。
Discover the hierarchical tree structure classes by finding the class in the Model Explorer, double-click to open the class in the editor, and press F4 to open the hierarchy tree.
通过寻找模型搜索器中的类，找出等级树状结构类，双击打开编辑器中的类，按下f 4以打开等级树。
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