H桥式功放电路
H bridge type power amplify circuitry
MESFET功放管
MESFET power amplifying tube
功放电源
supplies of power amplifiers
气功放松训练
Qi Gong relaxation training
变压器耦合功率放大器
transformer-coupled power amplifier
并合功率运算放大器
hybrid power operational amplifier
大功率放大器
hot filament ion gaugehigh power amplifier
大功率集成运算放大器
high power operational amplifier