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| petroleum refining (processing) | |||
| refining petroleum | |||
| petroleum refining; oil refining | |||
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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 |
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