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单词 carbon microphone
释义

Definition of carbon microphone in English:

carbon microphone

noun
  • A microphone depending for its action on the varying electrical resistance of carbon granules when subjected to the varying pressure of sound waves.

Origin

Late 19th century; earliest use found in Telegraphic Journal.

 
 

Definition of carbon microphone in US English:

carbon microphone

noun
  • A microphone depending for its action on the varying electrical resistance of carbon granules when subjected to the varying pressure of sound waves.

Origin

Late 19th century; earliest use found in Telegraphic Journal.

 
 
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更新时间:2025/1/28 10:23:29