短语词组短语motional l impedance 动态阻抗;动阻抗freehandle breaker motional impedance 自由动态阻抗free motional impedance [电子]自由动态阻抗;自由动生阻抗;翻译loaded motional impedance 负荷动态阻抗;动态阻抗impedance motional 动生阻抗 返回 motional impedance