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| классификация нефтей | |||
| классификация нефти | |||
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| сорт масла | |||
| марка масла | |||
| сорт нефти | |||
| oil grading: 22 phrases in 10 subjects |
| Automobiles | 1 |
| Geology | 2 |
| Makarov | 1 |
| Oil / petroleum | 2 |
| Oil and gas | 1 |
| Oil processing plants | 6 |
| Oilfields | 1 |
| Oils and lubricants | 1 |
| Production | 1 |
| Technology | 6 |
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