 |
| |||
| gauge ring; ring gauge | |||
| bit gauge | |||
| drill gauge | |||
| bit gage; bit ring | |||
|
钻头规 : 24 phrases in 6 subjects |
| Business | 1 |
| Earth sciences | 1 |
| Mechanics | 1 |
| Oil / petroleum | 7 |
| Shipbuilding | 1 |
| Technology | 13 |
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