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工艺决策知识获取是建立工艺决策专家系统知识库的瓶颈。本文介绍了在建立飞机结构件数控加工工艺知识库时，工艺决策知识的获取过程与知识处理方法。
Knowledge acquisition of process decision making is the bottleneck of establishing knowledge base of process decision expert system. This article introduces the process of obtaining process decision knowledge and the method of knowledge processing when establishing the knowledge base of CNC machining technology for aircraft structural parts.