rotational speed rpm
转速RPM
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Thread cutting. When performing thread cutting, the axial feed must be kept at a constant rate, which is dependent upon the rotational speed (RPM) of the workpiece.
在螺纹切削作业时，轴向进给必须保持恒定速率，这取决于工件的转速(rpm)。
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