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| 多环芳基的 | |||
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| 稠环芳香烃 | |||
| 多环芳香族化合物 | |||
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polycyclic aromatic : 24 phrases in 11 subjects |
| Chemistry | 1 |
| Earth sciences | 2 |
| Ecology | 1 |
| Environment | 1 |
| Food service and catering | 1 |
| Geology | 1 |
| Nautical | 1 |
| Oil / petroleum | 2 |
| Oil processing plants | 1 |
| Technology | 9 |
| Water resources | 4 |
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