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| bit diameter; bit size | |||
| drill bit diameter; gage of bit; gauge of bit | |||
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钻头直径 : 38 phrases in 8 subjects |
| Automobiles | 1 |
| Drilling | 13 |
| Earth sciences | 1 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 1 |
| Oil / petroleum | 5 |
| Technology | 14 |
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