| |||
supersound; ultrasonic; supersonic (про швидкість) | |||
hypersonic; infra-acoustic; infrasonic; supersonic |
ультразвуковий : 40 phrases in 11 subjects |
Aviation | 4 |
Chemistry | 1 |
Coal | 1 |
Communications | 1 |
Computers | 1 |
Construction | 2 |
General | 1 |
Microelectronics | 16 |
Military | 6 |
Oil and gas | 6 |
Radio | 1 |