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简单网 : 27 phrases in 12 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Computer networks | 6 |
| Electronics | 6 |
| Information technology | 3 |
| Mathematics | 1 |
| Multimedia | 2 |
| Project management | 1 |
| Rail transport | 2 |
| Space | 1 |
| Technology | 1 |
| Water resources | 1 |
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