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| air-to-air identification | |||
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空 空识别 : 50 phrases in 10 subjects |
| Air defense | 6 |
| Aviation | 16 |
| Computer networks | 1 |
| Electronics | 8 |
| General | 3 |
| Nautical | 1 |
| Securities | 1 |
| Space | 10 |
| Technology | 3 |
| Telecommunications | 1 |
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