A key technique for the development of CAD system is described: the building method of parametric graph library and its management.
本文阐述了机械CAD系统开发过程中的关键技术：参数化图形库的建立方法及其建立后的图形库的管理。
A key technique for the development of CAD system is described: the building method of parametric graph library and its management.
本文阐述了机械CAD系统开发过程中的关键技术：参数化图形库的建立方法及其建立后的图形库的管理。
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