in this paper, we use vice to describes how to format the pretreatment part, using constrained assembly, unconstrained assembly, three-dimensional spherical assembly in three ways the whole assembly, and demonstrate the application of physical design in the mechanism movement simulation.%以虎钳的装配及运动仿真为例，介绍了如何对零件进行格式预处理，使用约束装配、无约束装配、三维球装配三种方式进行整体装配，并展示了实体设计在机构运动仿真中的应用。
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