 |
| |||
| fréquence étalon | |||
| fréquence-étalon f | |||
| fréquence de base; fréquence de référence | |||
| эталонная частота: 12 phrases in 3 subjects |
| Aviation | 2 |
| Radio | 9 |
| Technology | 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