magnetotelephone

名词 n.
中文释义

英文释义

名词 n.
  1. An early telephone with a diaphragm of soft iron placed close to the pole of a magnet upon which is wound a coil of fine wire. Its vibrations produce corresponding currents in the wire by induction. dated

词形变化

magnetotelephones plural

词源

From magneto- + telephone.
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