- turns of spindle per minute
- 每分钟锭子转数
English-Chinese lightIndusrty dictionary (英汉轻工业大词典). 2013.
English-Chinese lightIndusrty dictionary (英汉轻工业大词典). 2013.
Surface feet per minute — (SFM or SFPM) is a unit of velocity used in machining to identify the machinability ratings of a material.SFM is the velocity around the tool or the material measured in feet per minute as the spindle of a lathe turns. The faster the spindle… … Wikipedia
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