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| тип скважины | |||
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井型 : 54 phrases in 8 subjects |
| Drilling | 14 |
| Electronics | 3 |
| General | 16 |
| Geophysics | 14 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Oilfields | 4 |
| Technology | 1 |
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