导程一般是指在螺纹或蜗杆中，同螺旋线上相邻对应点的轴向距离。 当螺纹或蜗杆是由一条螺旋线所形成时，导程等于螺距；当螺纹或蜗杆由几条螺旋线所形成时，导程等于螺距与螺纹线数的乘积。
n. lead
misc. helical pitch
... 关键词: 计转数定距； 弹道； 导程； 工程算法 [gap=1335]Key words: turns-counting distance measurement; ballistics; lead; engineering algorithm ...
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导程角 [机] lead angle ; [机] angle of lead
螺纹导程 lead ; lead of screw thread ; lead of thread ; screw lead
导程凸轮 [机] Lead cam
分度圆柱导程角 lead angle at reference cylinder
引导程序协议 BOOTP ; BOOTstrap Protocol
导程检查仪 lead tester ; lead gauge
螺旋导程 Lead of screw ; helical lead
间接导程 indirect leads
单极导程 unipolar lead
根据螺纹导程，电力控制，主轴旋转和进给运动都是同步的。
With the synchronous spindle the spindle rotation and the feed motion are synchronized by an electronic regulation according to the lead of thread.
从理论上证明了改变导程角是控制物料旋留时间的最有效的方法。
It is proved theoretically that changing lead Angle is the best way to control the turn staying time of material.
本文叙述如何在某一特定的车床上加大导程的方法及提高导枉设计精度的措施。
This paper describes the method to increase the lead on a specific lathe and the measures to improve the lead design accuracy.
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