英语词汇“D-region”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	D-region
释义	D-region noun Another term for D-layer.Negative ions are a feature of the D-region ionosphere, where they hold a substantial portion of the negative charge.... The altitude of the D-region ionosphere is too low for satellite measurements of electron density.
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