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给出了基于信息元的工艺知识抽象模型及其内部模式表达方法，介绍了基于工艺 知识抽象信息模型的推理机制．所提出的基于信息元的工艺知识模型及建立在该模型基 础上的推理机制已成功地支持了ＴＨＣＡＰＰ－ＳＨＥＬＬ ＣＡＰＰ框架系统的开发．
An abstract model of process knowledge based on information element and its internal pattern expression are given. The reasoning mechanism based on abstract information model of process knowledge is introduced. The proposed knowledge-based process knowledge model and reasoning mechanism based on this model have successfully supported the development of THCAPP-SHELL CAPP framework system.