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| communication navigation equipment | |||
| 通信导航设备: 12 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Electronics | 1 |
| General | 1 |
| Project management | 1 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 1 |
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