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| 安全协议 | |||
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secure protocol : 17 phrases in 9 subjects |
| Air defense | 2 |
| Communications | 1 |
| Cryptography | 4 |
| Electronics | 3 |
| Information technology | 1 |
| Multimedia | 1 |
| Project management | 2 |
| Technology | 2 |
| Telecommunications | 1 |
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