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petroleum refining (processing) | |||
refining petroleum | |||
petroleum refining; oil refining |
石油 炼制 : 28 phrases in 9 subjects |
Architecture | 1 |
Business | 1 |
Chemistry | 1 |
Company name | 1 |
Exhibitions | 1 |
General | 4 |
Oil / petroleum | 7 |
Oil processing plants | 2 |
Technology | 10 |