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эталон частоты | |
astronaut. | frequency reference |
media. | oscillator |
scient. | CU |
Национальное Бюро Стандартов | |
O&G, tengiz. | National Bureau of Standard |
Национальное бюро стандартов | |
econ. | National Bureau of Standards; National Bureau of Standards |
O&G | NBS |
oil | NBS National Bureau of Standards |
эталон частоты: 58 phrases in 12 subjects |
Astronautics | 2 |
Computers | 1 |
Electronics | 13 |
General | 1 |
Makarov | 4 |
Mass media | 2 |
Metrology | 10 |
Microelectronics | 9 |
Nautical | 2 |
Physics | 1 |
Technology | 9 |
Telecommunications | 4 |