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| 移动式钻井机 | |||
| 轻便钻机; 移动式钻机 | |||
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mobile rig : 18 phrases in 6 subjects |
| Drilling | 3 |
| Earth sciences | 2 |
| Management | 1 |
| Navigation | 1 |
| Oil / petroleum | 4 |
| Technology | 7 |
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