 |
| |||
| побочная частота | |||
|
副 频率 : 11 phrases in 5 subjects |
| Astronautics | 1 |
| General | 3 |
| Radio | 1 |
| Technology | 5 |
| Telecommunications | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips