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| 井口采油装置 | |||
| 自喷装置; 井口装置; 采气树 | |||
| фонтанная арматура: 30 phrases in 5 subjects |
| Drilling | 2 |
| General | 6 |
| Oil / petroleum | 6 |
| Oilfields | 14 |
| Sakhalin | 2 |
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