- boring bit
- 钻孔: drill; bore; drill hole perf ...
- 钻头: boring crown; bore bit; dril ...
- 钻头钻床钻孔钻: drill
- 盲孔钻孔: blind & buried hole drilling
- 深孔钻孔: deep hole drilling
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钻孔钻头的英文
发音:
- boring bit
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