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| petroleum refining | |||
| oil refining | |||
| очистка нефти: 29 phrases in 12 subjects |
| American usage, not spelling | 1 |
| Chemistry | 1 |
| Drilling | 1 |
| Energy industry | 1 |
| Mechanic engineering | 1 |
| Oil / petroleum | 7 |
| Oil and gas | 2 |
| Oil and gas technology | 5 |
| Oilfields | 2 |
| Sakhalin | 4 |
| Sakhalin R | 1 |
| Technology | 3 |