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| 烷 化 合 物: 38 phrases in 13 subjects |
| Automobiles | 3 |
| Chemistry | 1 |
| Ecology | 1 |
| Environment | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geology | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 10 |
| Polymers | 9 |
| Space | 1 |
| Technology | 4 |
| Textile industry | 1 |
| Water resources | 2 |