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。

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Many of these decisions may be based on your personal experience and knowledge, but system design and architecture tools often play a bigger role in this process.

其中的许多决策可能是基于您的个人经验和认识，但是系统设计和体系结构设计工具常常在这个过程中扮演了比较重要的角色。

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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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