audio-frequency push-pull ampli-fier
【电学】变频机，相数转换器，交流／直流转换器【电学】变频机，相数转换器， 交流／直流转换器
frequency converter, phase number converter, ac/ac converter
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相关词条
relative frequency
３０赫－２０千赫\nacoustic frequency【声】;audible frequency【声】;audio frequency【声】
Arrhenius frequency factor
acoustical telegraphy【通信】;audio frequency telegraph【通信】;
vibrating-reed frequency sensor
frequency function
sonic frequency controlling amplifier