【摘要】 根据虚拟装配理论,介绍了基于虚拟现实的CAD系统,阐述了虚拟零件建模原理,研究了虚拟零件基于约束的三维操作。更多还原

【Abstract】 According to the theory of visual assembly,this article introduced the CAD system based on the visual reality,expounded the model principle of visual parts and researched the three-dimensional operation of the visual parts based on the restriction.更多还原