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| скважина с открытым стволом | |||
| необсаженная скважина | |||
| необсаженный забой скважины | |||
| 裸井: 32 phrases in 7 subjects |
| Agriculture | 1 |
| Drilling | 17 |
| General | 5 |
| Geology | 1 |
| Geophysics | 2 |
| Oil / petroleum | 5 |
| Oil and gas technology | 1 |
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