磁致电阻放大器
magneto resistive amplifier
电磁耦合式双调谐放大器
electromagnetic coupled type double tuned amplifier
励磁电流放大器
field amplifier
Exciter field current amplifier
避雷器放电电压-时间曲线
arrester discharge voltage-time curve
差分－运放放大电路
differential-operational amplify circuit
超导电放大器
superconducting amplifier
电磁电器
electromagnetic apparatus
magnetic and wring
电磁电器性能
electromagnetism electric equipment performance