 |
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| 全向无线电导航系统 | |||
| 全向无线电信标 (beacon) | |||
| 全向无线电信标; 全向指向标 | |||
| 全向导航 | |||
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| 全向无线电信标 | |||
| omnidirectional range: 51 phrases in 12 subjects |
| Air defense | 3 |
| Aviation | 19 |
| Construction | 1 |
| Electronics | 9 |
| General | 3 |
| Geophysics | 1 |
| Information technology | 1 |
| Navigation | 1 |
| Remote sensing | 1 |
| Skydiving | 1 |
| Space | 2 |
| Technology | 9 |