字典網>> 英漢字典>> F開頭詞條>>f-region的意思

f-region

讀音

漢語翻譯

【電】 F區

英文解釋:

名詞 f-region:

  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:Appleton layer, F layer, F region

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