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伝声管でんせいかん

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でんせいかん
Meaning
    1. ①
      speaking tube; voice pipe
    1. ①
      EN A speaking tube or voicepipe is a device based on two cones connected by an air pipe through which speech can be transmitted over an extended distance.
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Kanji
伝 デン transmit, go along, walk along 声 セイ voice 管 カン pipe, tube, wind instrument
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