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氧 丁 酰基 : 19 phrases in 8 subjects |
| Electronics | 2 |
| General | 6 |
| Oil / petroleum | 1 |
| Perfume | 2 |
| Pharmacology | 1 |
| Plastics | 1 |
| Polymers | 5 |
| Water resources | 1 |
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