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| radar navigation system; radar navigator | |||
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雷达导航系统 : 28 phrases in 8 subjects |
| Air defense | 3 |
| Aviation | 4 |
| Earth sciences | 1 |
| Electronics | 5 |
| General | 1 |
| Shipbuilding | 1 |
| Space | 4 |
| Technology | 9 |
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