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负 输出 : 24 phrases in 12 subjects |
| Aviation | 2 |
| Computers | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 7 |
| General | 1 |
| Geophysics | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Space | 3 |
| Technology | 2 |
| Wind Energy | 1 |
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