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首页 - 英汉词典 - F字开头的单词或词组 - f-region

英语解释

f-region

汉语翻译

【电】 F区

f-region英语解释

名词 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
同义词：Appleton layer, F layer, F region

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