Knowledge representation and acquisition are the basis of knowledge based design system.
机械产品设计知识的表达、获取是基于知识设计系统的基础和关键。
Based on whole system frame, knowledge-base concept design, logic design and physical design began.
在此基础上，进行系统知识库的概念设计、逻辑设计与物理设计。
Based on whole system frame, knowledge-base concept design, logic design and physical design began.
在此基础上，进行系统知识库的概念设计、逻辑设计与物理设计。
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