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| 空-地通信系统 | |||
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| 空地通信系统; 加空地通信系统 | |||
| air-ground communications system: 16 phrases in 6 subjects |
| Air defense | 1 |
| Aviation | 3 |
| Electronics | 4 |
| General | 3 |
| Information technology | 1 |
| Space | 4 |
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