f-region
f-region是什么意思、f-region怎么讀
f-region漢語(yǔ)翻譯
【電】 F區(qū)
f-region英語(yǔ)解釋
名詞 f-region:
- 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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