This equation is useful in determining the kinematic linkage between the lathe spindle and the lead screw and enables proper selection of the gear train between them.

这公式在决定车床心轴和丝杆之间的运动学关系时很有用，并且提供了正确挑选它们之间轮系的方法。

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First one offset of the mechanism was split into two serial mechanism, and two screw kinematic equations were given.

首先将该机构的一个分支拆分成两个串联机构，分别建立了动平台的螺旋运动方程；

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Input motion screw and output motion screw are applied to represent design specification as well as kinematic behavior requirements.

通过输入运动旋量和输出运动旋量表达机构的运动行为要求和设计需求。

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