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單詞乎

Appleton layer

Appleton layer是什么意思、Appleton layer怎么讀

Appleton layer漢語翻譯

【計(jì)】 阿普爾頓層

Appleton layer英語解釋

名詞 appleton layer:

  1. the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
    同義詞：F layer, F region
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