Conceptual design of product is a creative action and a course of forming and optimizing a product scheme.
产品概念设计是一种创造性的活动，是一个产品方案形成和方案优化的过程。
The method of conceptual design of product is introduced; the trait of method of conceptual design and parametric part library in method of conception design are analyzed.
介绍了产品的设计方法，分析概念方案设计方法的特点和基于该方法的三维零件库的特点。
In reasoning process of product conceptual design, expression of knowledge of design problem is a pivotal step.
在产品概念设计的推理过程中，设计问题的知识表达是关键的第一步。
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