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| 指向信标; 定向信标; 定向导标; 无线电定向信标 | |||
| directional beacon: 29 phrases in 9 subjects |
| Air defense | 1 |
| Aviation | 6 |
| Business | 1 |
| Electronics | 2 |
| General | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 14 |
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