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| communication networks | |||
| 联系网络: 24 phrases in 10 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Electronics | 9 |
| Finances | 1 |
| Information technology | 3 |
| Name of organization | 2 |
| Project management | 2 |
| Space | 1 |
| Telecommunications | 3 |
| United Nations | 1 |
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