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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With the synchronous spindle the spindle rotation and the feed motion are synchronized by an electronic regulation according to the lead of thread.

根据螺纹导程，电力控制，主轴旋转和进给运动都是同步的。

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Around the aircraft up and down movements, spindle box designed to lead, to draw beautiful and practical art line CARDS.

该机左右上下升降，主轴箱设计领先，划出美观实用的画线板。

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