有些加工，如精度要求不高或需要切除的金属量较小，也可能只需一次精切削。

Also, in some jobs, fot example, when great accuracy is not needed, or when a comparatively small amount of metal must be removed, a finishing cut may be all that is required.

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机械工厂的切削加工有两种，分别称为“粗切削”和“精切削”。

There are two kinds of cuts in machine- shop work called, respectively, the "roughing cut" and the "finishing cut".

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