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| интервал; пачка | |||
| часть пласта | |||
| 层段: 49 phrases in 13 subjects |
| Aerohydrodynamics | 1 |
| Drilling | 5 |
| Electrical engineering | 1 |
| General | 10 |
| Geology | 8 |
| Geophysics | 1 |
| Military | 1 |
| Missiles | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Oilfields | 2 |
| Technology | 15 |
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