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| communications security | |||
| communication security (性) | |||
| communication privacy; telecommunication security | |||
| communication security | |||
| 通信保密: 78 phrases in 9 subjects |
| Air defense | 9 |
| Aviation | 11 |
| Computer networks | 1 |
| Electronics | 21 |
| General | 1 |
| Information technology | 6 |
| Nautical | 1 |
| Space | 20 |
| Technology | 8 |
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