介绍了动态切片的基本概念，并将程序依赖图算法应用于动态切片，从而达到缩小程序分析范围的目的，讨论了动态切片在程序调试和软件测试中的应用。
The basic conceptions of dynamic slicing are introduced, to which the program dependence graph arithmatic is tried to apply, thus reducing the scope of program analysis.
传统的算法是通过建立程序的依赖图得到动态切片，但依赖图需要占用大量的空间，因此算法效率较低。
Traditional algorithms usually get dynamic program slices by building dependence graphs of the programs, but dependence graphs take lots of memory space, so they are inefficient.
介绍了动态切片的基本概念，并将程序依赖图算法应用于动态切片，从而达到缩小程序分析范围的目的，讨论了动态切片在程序调试和软件测试中的应用。
The paper discusses basic concepts in dynamic slicing at first, then presents a dynamic slicing method based-on dynamic flow, it′s application in software test and program debugg.
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