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单词
D-region
释义
Definition of
D-region
in English:
D-region
noun
another term for D-layer
Example sentences
Examples
The altitude of the D-region ionosphere is too low for satellite measurements of electron density.
Negative ions are a feature of the D-region ionosphere, where they hold a substantial portion of the negative charge.
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更新时间：2026/9/26 5:59:54