This method can be used to analyze the semantic relations in object-oriented program units by ripple effect analysis, and the control dependency and data dependency by use of system dependency graph.

提出了把波动效应分析和系统依赖图结合起来进行切片的方法，通过波动效应分析反映面向对象程序中单元间的波动关系，基于系统依赖图切片侧重于分析控制依赖和数据依赖。

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