| |||
sonic barrier | |||
transonic speed; transonic velocity | |||
sonic threshold | |||
transonic barrier | |||
sound barrier | |||
| |||
sound barrier |
звуковой барьер: 18 phrases in 8 subjects |
Aeronautics | 1 |
Astronautics | 1 |
Aviation | 5 |
Aviation medicine | 1 |
Insurance | 1 |
Makarov | 4 |
Military | 4 |
Natural resourses and wildlife conservation | 1 |