 |
| |||
| medium frequency direction finding | |||
| 中频测向: 26 phrases in 9 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 8 |
| General | 4 |
| Geophysics | 2 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 1 |
|
| |||
| medium frequency direction finding | |||
| 中频测向: 26 phrases in 9 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 8 |
| General | 4 |
| Geophysics | 2 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 1 |