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频分制 : 37 phrases in 12 subjects |
| Air defense | 3 |
| Aviation | 2 |
| Ceramics | 1 |
| Electronics | 9 |
| Genetics | 1 |
| Geophysics | 3 |
| Information technology | 1 |
| Oil / petroleum | 2 |
| Radio | 1 |
| Space | 6 |
| Technology | 6 |
| Telecommunications | 2 |
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