 |
| |||
| 地面指向标 | |||
|
beacon, ground : 10 phrases in 6 subjects |
| Air defense | 2 |
| Aviation | 3 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Radio | 1 |
| Technology | 2 |
|
| |||
| 地面指向标 | |||
|
beacon, ground : 10 phrases in 6 subjects |
| Air defense | 2 |
| Aviation | 3 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Radio | 1 |
| Technology | 2 |