 |
| |||
| 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 |