Parametric design and variational design are the key technology in the modern CAD/CAM systems.
参数化、变量化设计已成为现代CAD／CAM系统的核心技术。
Currently, feature is employed by most of the parametric solid modeling systems which are the kernel modeling system of the network-centric CAD systems.
目前网络CAD系统的核心造型系统大多是基于特征的参数化造型系统。
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