| |||
baffle | |||
sonic barrier; sound barrier | |||
acoustic; acoustical; sonic threshold | |||
| |||
sonic barrier | |||
| |||
sound barrier | |||
| |||
sound barrier |
声障: 59 phrases in 13 subjects |
Automobiles | 4 |
China | 1 |
Electronics | 1 |
Finances | 1 |
Nautical | 1 |
Nursing | 1 |
Oil / petroleum | 1 |
Otorhinolaryngology | 4 |
Rail transport | 15 |
Shipbuilding | 3 |
Space | 2 |
Technology | 21 |
Telecommunications | 4 |