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| aviation radio navigation, land; airborne radio navigation | |||
| aeronautical radio navigation | |||
| 航空无线电 导航: 17 phrases in 7 subjects |
| Air defense | 3 |
| Aviation | 3 |
| Electronics | 4 |
| General | 2 |
| Space | 3 |
| Technology | 1 |
| Telecommunications | 1 |
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