 |
| |||
| supersonic signal | |||
| ultrasonic signal | |||
| ультразвуковой сигнал: 11 phrases in 8 subjects |
| Automated equipment | 1 |
| Aviation | 1 |
| Mass media | 3 |
| Medical appliances | 1 |
| Metallurgy | 2 |
| Physics | 1 |
| Power system protection | 1 |
| Technology | 1 |
|
| |||
| supersonic signal | |||
| ultrasonic signal | |||
| ультразвуковой сигнал: 11 phrases in 8 subjects |
| Automated equipment | 1 |
| Aviation | 1 |
| Mass media | 3 |
| Medical appliances | 1 |
| Metallurgy | 2 |
| Physics | 1 |
| Power system protection | 1 |
| Technology | 1 |