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| тяжёлая нефть | |||
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重 石油 : 25 phrases in 9 subjects |
| Chemistry | 1 |
| General | 8 |
| Geophysics | 1 |
| Oil / petroleum | 4 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |
| Oilfields | 1 |
| Shipbuilding | 1 |
| Technology | 7 |
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