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单词 e layer
释义 e layer
noun
Usage: capitalized E
: the lowest well-defined layer of the ionosphere regularly occurring during the daytime at about 60 miles above the earth's surface and capable of reflecting radio waves of medium frequency — compare e region
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英语词典包含332784条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

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