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| 钻入; 钻开生产层 | |||
| 打开生产层 | |||
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drilling-in : 34 phrases in 7 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Drilling | 7 |
| Earth sciences | 1 |
| Explosives and Explosive Ordnance Disposal | 7 |
| Oil / petroleum | 6 |
| Technology | 11 |
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