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| signal communications | |||
| signal communication | |||
| relation | |||
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通信 联络 : 24 phrases in 12 subjects |
| Architecture | 1 |
| Aviation | 3 |
| Earth sciences | 1 |
| Electronics | 4 |
| Finances | 1 |
| General | 5 |
| Metallurgy | 1 |
| Nautical | 1 |
| Project management | 1 |
| Racing and motorsport | 1 |
| Space | 3 |
| Telecommunications | 2 |
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