该虚拟环境主要包括仿真环境的建立和加工过程的建立两部分，其中仿真环境的建立包括加工中心的建模和零件的建模。
The simulation and machining process were built up in the virtual manufacturing environment. Models of machining center and part were produced in the simulation environment.
提出了动态八叉树结构和相应的自相似裂变递归算法，实现了虚拟环境下的可加工工件动态建模。
A dynamic 8-tree structure and a relative self-similar recursion algorithm are presented to model a dynamic workpiece object, which is machinable.
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