| |||
high-frequency amplification | |||
high frequency amplification |
高频 放 大 : 31 phrases in 10 subjects |
Air defense | 5 |
Aviation | 2 |
Electronics | 3 |
General | 5 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Shipbuilding | 1 |
Space | 2 |
Technology | 10 |
Telecommunications | 1 |