- 打: strike; hit; knock
- 粗磨: coarse grind; grind coarse; ...
- 粗: wide; thick
- 打粗: buffing; roughing; round aquare toe
- 粗磨: [机械工程] coarse grind(ing); grind coarse; grind first; grind preparatory; grind rough; preparatory grinding; rough grind(ing); kibble
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