To complete the transformation process, you need to first select the data model you want to transform.

为了完成转换过程，首先需要选择要转换的数据模型。

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Then introduced the transformation process that from the source code to the abstract data model. Focus on the code extraction patterns and the analysis of the system source code process.

之后介绍了源代码向抽象数据模型的转化过程，重点阐述了代码抽取模式和系统源代码分析过程；

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Then introduced the transformation process that from the source code to the abstract data model. Focus on the code extraction patterns and the analysis of the system source code process.

之后介绍了源代码向抽象数据模型的转化过程，重点阐述了代码抽取模式和系统源代码分析过程；

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