| |||
| еталон частоти; опорна частота | |||
|
frequency reference : 5 phrases in 4 subjects |
| Aviation | 1 |
| Information technology | 1 |
| Microelectronics | 2 |
| Military | 1 |
| |||
| еталон частоти; опорна частота | |||
|
frequency reference : 5 phrases in 4 subjects |
| Aviation | 1 |
| Information technology | 1 |
| Microelectronics | 2 |
| Military | 1 |