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英语-汉语/电磁波
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外貌
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来自维基教科书，面向开放世界的开放书籍
<
英语-汉语
电磁波
是
能量
的一种
辐射
，它由
电磁场
产生。
电磁波
是 电磁场 产生的 辐射 能量。
分类
:
图书：英语-汉语
华夏公益教科书
