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| 钻井时间; 钻时; 钻进时间 | |||
| 钻探时间; 钻探施工期 | |||
| drilling time: 42 phrases in 6 subjects |
| Automobiles | 1 |
| Drilling | 15 |
| Engineering geology | 1 |
| Geology | 3 |
| Oil / petroleum | 8 |
| Technology | 14 |
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