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丁 二 烯基 : 161 phrases in 15 subjects |
| Automobiles | 2 |
| Aviation | 4 |
| Chemistry | 44 |
| Electronics | 3 |
| General | 15 |
| Metallurgy | 2 |
| Oil / petroleum | 14 |
| Oil processing plants | 1 |
| Perfume | 18 |
| Pharmacology | 2 |
| Plastics | 14 |
| Polymers | 25 |
| Space | 6 |
| Technology | 9 |
| Water resources | 2 |
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