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幅度调制 : 45 phrases in 11 subjects |
| Air defense | 1 |
| Artificial intelligence | 2 |
| Aviation | 2 |
| Earth sciences | 2 |
| Electronics | 17 |
| Geophysics | 4 |
| Information technology | 5 |
| Military | 1 |
| Securities | 1 |
| Space | 6 |
| Technology | 4 |
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