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| 数据密码化 | |||
| 数据加密 | |||
| data encryption: 32 phrases in 10 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Computer networks | 1 |
| Cryptography | 3 |
| Electronics | 3 |
| Information technology | 9 |
| Librarianship | 4 |
| Project management | 1 |
| Space | 4 |
| Telecommunications | 4 |
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