- double jack
- 双柱: queen post
- 钻架: drilling cramp; auger board; ...
- 双塞孔 双手锤 双柱钻架: doublejack
- 柱钻: cylindrical drill; pivot bur
- 钻架: [工业] drilling cramp; auger board; drill mounting; drill rig; rock drill mounting
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双柱钻架的英文
发音:
- double jack
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