| |||
| 进场导航 | |||
|
approach navigation : 10 phrases in 5 subjects |
| Aviation | 4 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Space | 1 |
| Technology | 3 |
| |||
| 进场导航 | |||
|
approach navigation : 10 phrases in 5 subjects |
| Aviation | 4 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Space | 1 |
| Technology | 3 |