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天火字典

英日字典: perpetual_motion

perpetual motion   (TTS Sound)


The perpetual_motion has 1 Senses.

  • perpetual motion
  • 永久機関
  • motion that continues indefinitely without any external source of energy; impossible in practice because of friction
  • 外部からのエネルギーなしで永久に続く運動

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