| |||
frequency standard | |||
frequency reference |
стандарт частоты: 63 phrases in 14 subjects |
Electronics | 14 |
Energy industry | 1 |
General | 1 |
Household appliances | 5 |
Makarov | 4 |
Mass media | 14 |
Metrology | 1 |
Military | 3 |
Physics | 7 |
Quantum electronics | 4 |
Security systems | 2 |
Space | 1 |
Technology | 4 |
Telecommunications | 2 |