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| data channel | |||
| 数据信道: 63 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 8 |
| Computer networks | 2 |
| Electronics | 18 |
| Information technology | 8 |
| Project management | 1 |
| Space | 16 |
| Technology | 5 |
| Telecommunications | 4 |
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