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有机 反 应 : 29 phrases in 10 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Earth sciences | 2 |
| Electronics | 4 |
| General | 4 |
| Metallurgy | 1 |
| Nuclear physics | 6 |
| Space | 1 |
| Technology | 8 |
| Water resources | 1 |
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