... magmeter 释义:直读式频率计 frequency meter 释义:频(率)计,频率计 audiofrequency meter 释义:声频率计 ...
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短语
电声频率计
electroacoustic frequency meter
声频频率计
sonic frequency cymometer
电声式频率计
electroacoustic frequency meter
声频功率计
[电子]
audio frequency power meter
;
audio-frequency power meter