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单词 crystal microphone
释义

Definition of crystal microphone in English:

crystal microphone

noun

  • A microphone which depends for its action on the piezoelectric activity of a crystalline substance.

Origin

1920s; earliest use found in British Patents.

Definition of crystal microphone in US English:

crystal microphone

noun

  • A microphone which depends for its action on the piezoelectric activity of a crystalline substance.

Origin

1920s; earliest use found in British Patents.
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更新时间：2024/9/21 11:17:55