英语词汇“Appleton layer”的意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-ABC网

单词	Appleton layer
释义	Appleton layer 汉语翻译【计】阿普尔顿层英语解释：名词 appleton layer: 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：F layer, F region
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Appleton layer