Based on analyzing the machining process planning, the universal process planning model is presented using the principle and method of systematic engineering.
在分析机械加工工艺规程基础上，运用系统工程学的原理和方法，建立了通用工艺规程模型。
There is no universal pattern in representing process planning knowledge and the pattern must be chosen according to the feature of various knowledge.
工艺设计知识的表达不存在普遍通用的表达模式，而必须根据各类工艺知识的结构特点选择适合的知识表达方法。
There is no universal pattern in representing process planning knowledge and the pattern must be chosen according to the feature of various knowledge.
工艺设计知识的表达不存在普遍通用的表达模式，而必须根据各类工艺知识的结构特点选择适合的知识表达方法。
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