 |
| |||
| 有效频次 | |||
| 有效频率 | |||
|
effective frequency : 9 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Otorhinolaryngology | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 1 |
|
| |||
| 有效频次 | |||
| 有效频率 | |||
|
effective frequency : 9 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Otorhinolaryngology | 1 |
| Space | 2 |
| Technology | 1 |
| Telecommunications | 1 |