| |||
| 进场进近距离和升降制导 | |||
|
range and elevation guidance for approach and landing : 4 phrases in 3 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Electronics | 1 |
| |||
| 进场进近距离和升降制导 | |||
|
range and elevation guidance for approach and landing : 4 phrases in 3 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Electronics | 1 |