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| 钻入某层段; 钻开油气层 | |||
| 打开生产层; 钻成井 | |||
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drill-in : 28 phrases in 10 subjects |
| Drilling | 3 |
| Earth sciences | 6 |
| Explosives and Explosive Ordnance Disposal | 4 |
| General | 2 |
| Heavy equipment vehicles | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 3 |
| Shipbuilding | 1 |
| Steel production | 1 |
| Technology | 6 |
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