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。
This method keeps the location base of form feature invariance during the feature modeling and editing, and it is suitable for feature parametric variational design and topological variation.
该方法使特征定位基准在特征造型过程中保持不变，且不随特征定位约束参数的改变而变化，能很好地满足参数化变动设计与拓扑结构变异的要求。
Variational design is the kernel of contemporary CAD technology. There are many solving methods for geometric constraint solving at the aim of variational design, but they all have some limitations.
变量化技术是当代CAD技术的核心，以实现变量化设计为目的的几何约束求解有多种方法，但它们都存在一定的局限性。
Variational design is the kernel of contemporary CAD technology. There are many solving methods for geometric constraint solving at the aim of variational design, but they all have some limitations.
变量化技术是当代CAD技术的核心，以实现变量化设计为目的的几何约束求解有多种方法，但它们都存在一定的局限性。
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