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Direct-coupled antenna

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Direct-coupled \Di*rect"-cou"pled\, a.
   Coupled without intermediate connections, as an engine and a
   dynamo.

   {Direct-coupled antenna} (Wireless Teleg.), an antenna
      connected electrically with one point of a closed
      oscillation circuit in syntony with it and earthed.
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