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一、概述零件信息的合理表达和自动获取是实现CAPP自动化的首要问题，也是CIMS环境下CAD／CAPP集成化的重要研究课题。尽管国内外专家学者已经提出并采用了诸如成组技术代码、拓扑或图论描述、专家语言等各种描述CAPP信息的方法，但从CAD儿APP集成需要来讲，实用而又有前途的方
I. General Description The reasonable representation and automatic acquisition of part information is the primary problem of realizing CAPP automation and an important research topic of CAD / CAPP integration in CIMS environment. Although domestic and foreign experts and scholars have proposed and adopted various methods of describing CAPP information such as group technical code, topological or graph theory description, expert language, etc., but from the needs of CAD APP integration, practical and promising parties