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本文提出了基于成组技术（ＧＴ）和专家系统相结合的工艺类比设计模型，介绍了以ＧＴ编码为基础对零件进行编码形成ＧＴ特征码及通过类比和人机界面而建造的ＣＡＰＰ专家系统，并给出了应用实例。
In this paper, a process analog design model based on GT and expert system is presented. The CAPP expert system which encodes the parts based on GT encoding and forms GT signature codes through analogy and man-machine interface is introduced. And gives the application example.