Surface patch must be continuous and consistent for contact judgment by the method of parameter surface patch, but the trimmed surface from CAD does not suffice the request.
用参数曲面片法进行接触判断，对于曲面的表示有连续及相容的要求，但用CAD设计的裁剪曲面并不满足这个要求。
Based on the study of product design and product design process, the parameter surface model for supporting the product design process dynamic management is established.
在研究产品设计和产品设计过程的基础上，建立了支持产品设计过程动态管理的参数面模型。
Research into the product design parameter organization and management is made and the instance of the parameter surface model is also given.
对产品设计的参数组织和管理进行了深入研究，给出了参数面模型支持下的应用实例。
Research into the product design parameter organization and management is made and the instance of the parameter surface model is also given.
对产品设计的参数组织和管理进行了深入研究，给出了参数面模型支持下的应用实例。
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