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音频放大器 yīnpín fàngdàqì
avia.	audio frequency amplifier
el.	voice amplifier; voice frequency amplifier
geophys.	audiofrequency amplifier
otorhinol.	audifier; audio-amplifier
space	audio amplifier; sound frequency amplifier
tech.	audio-frequency amplifier
telecom.	low frequency amplifier
音频〔电唱机〕放大器
hi-fi	phono amplifier
音频放大器［扩音机］ yīnpín fàngdàqì
shipb.	speech amplifier
音［声］频放大器
telecom.	audio frequency amplifier

音频 放大器: 7 phrases in 2 subjects

Electronics	6
Shipbuilding	1