It is obvious that the machining marks in both cases take the form of a spiral.
很明显在这两种情况下机加工痕迹都是螺线形式。
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.
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 basic theory and process for machining marks (code) on the outer wall of pipe with electrolyse-jet are introduced. A reasonable process rule is thus given experimentally.
介绍了采用电解一射流加工法在油管外壁表面加工标记（号）的基本原理及其过程，通过实验总结出了较为合理的工艺规范。
Firstly, it produces a superior surface finish with all machining marks being removed from the surface.
首先，它通过去除所有机加工痕迹能产生较好的表面光洁度。
Firstly, it produces a superior surface finish with all machining marks being removed from the surface.
首先，它通过去除所有机加工痕迹能产生较好的表面光洁度。
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