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扩 散对 : 35 phrases in 12 subjects |
| Aviation | 3 |
| Chemistry | 1 |
| Earth sciences | 4 |
| Electronics | 8 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 2 |
| Refrigeration | 3 |
| Technology | 6 |
| United Nations | 1 |
| Wind Energy | 3 |
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