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| 海上钻井平台 | |||
| 海洋钻井平台 | |||
| 海上钻探装置; 海上钻井装置 | |||
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offshore drilling unit : 12 phrases in 5 subjects |
| Drilling | 3 |
| Earth sciences | 2 |
| Nautical | 1 |
| Navigation | 3 |
| Oil / petroleum | 3 |
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