Platform Independence Model is one of key models in Model Driven Architecture(MDA), and the quality of under development system is decided by PIM's accuracy.

平台无关模型是模型驱动架构（MDA）中关键模型之一，它的精确性直接关系到待发系统的质量。

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Document object model (DOM) is a set of platform-independence and language-independence interfaces, and it is the basis of the implementation of XML document.

文档对象模型(DOM)是一种与平台无关、语言无关的标准接口，是XML文档操作的基础。

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