pitch helix
... normal helix 正常螺旋线,正交螺旋... pitch helix 节距螺旋线 cylindrical helix 柱面螺旋线 ...
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所以,由此产生的机加工痕迹是一条具有很小节距的螺旋线,该节距等于进给。因此机加工表面始终是圆柱形的。
The resulting machining marks are, therefore, a helix having a very small pitch, which is equal to the feed. Consequently, the machined surface is always cylindrical.
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