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硫气 : 60 phrases in 11 subjects |
| Chemistry | 6 |
| Ecology | 2 |
| Electronics | 1 |
| Environment | 1 |
| General | 17 |
| Geology | 7 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Oil processing plants | 15 |
| Resins | 1 |
| Technology | 7 |
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