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code combination; encode combination |
码组 合 : 34 phrases in 13 subjects |
Air defense | 1 |
Aviation | 1 |
Computers | 1 |
Cryptography | 1 |
Electronics | 3 |
General | 2 |
Information technology | 4 |
Mathematics | 1 |
Project management | 2 |
Space | 2 |
Technology | 5 |
Telecommunications | 10 |
Telegraphy | 1 |