英语词汇“carbon microphone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	carbon microphone
释义	Word Frequency carbon microphone noun a microphone in which a diaphragm, vibrated by sound waves, applies a varying pressure to a container packed with carbon granules, altering the resistance of the carbon. A current flowing through the carbon is thus modulated at the frequency of the sound waves
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