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一、引言早期，人们基于成组技术（GT）原理，通过建立相似零件族标准工艺规程的方法，实现CAPP系统的运行。这种被称作检索式、派生式、变异式或样件生成式的方法，其实只是利用计算机的存储和检索功能，代替手工编制工艺过程的部分劳动，而关键性的劳动，如：分析、逻辑算法
I. INTRODUCTION In the early stage, based on the principle of grouping technology (GT), people realized the operation of CAPP system by establishing the standard process rules for similar parts families. This kind of method, called search, derivative, mutation or sample generation, actually makes use of the storage and retrieval functions of a computer instead of part of the labor in hand-crafting the process. The key tasks such as analysis, Logic Algorithm