| |||
亚音频的; 亚声波的 | |||
次声频的 | |||
亚声频的 | |||
次声学 | |||
亚声的; 次声的 | |||
亚音速的; 亚声速的; 次声波的 | |||
| |||
低于声频的 |
infrasonic : 19 phrases in 9 subjects |
Electronics | 1 |
Geophysics | 1 |
Information technology | 3 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Shipbuilding | 1 |
Space | 6 |
Technology | 3 |
Telecommunications | 1 |