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备用 计 算 : 24 phrases in 11 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Computer numerical control | 1 |
| Electronics | 6 |
| General | 1 |
| Information technology | 2 |
| Metallurgy | 1 |
| Military | 1 |
| Space | 2 |
| Telecommunications | 2 |
| United Nations | 3 |
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