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bulk wave | |||
bulk acoustic wave |
体声波 : 32 phrases in 11 subjects |
Air defense | 1 |
Audio electronics | 1 |
Drilling | 1 |
Electronics | 9 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 3 |
Geophysics | 1 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Space | 1 |
Technology | 10 |