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单词 electromagnetic wave
释义 electromagnetic waven.(名词)
  1. A wave of energy having a frequency within the electromagnetic spectrum and propagated as a periodic disturbance of the electromagnetic field when an electric charge oscillates or accelerates.电磁波:频率在电磁波频谱内的一种能量波,当电荷振荡或加速时做为电磁场的周期性扰动而传播
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