| |||
| 固定频率 | |||
| |||
| 固定频率的; 定频的 | |||
|
fixed frequency : 34 phrases in 13 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Communications | 1 |
| Earth sciences | 1 |
| Electric machinery | 2 |
| Electronics | 5 |
| Energy industry | 1 |
| Geophysics | 1 |
| Mechanic engineering | 1 |
| Multimedia | 1 |
| Otorhinolaryngology | 1 |
| Space | 5 |
| Technology | 11 |