D-layer
/ˈdiːleɪə(r)/noun
- the lowest layer of the ionosphere, able to reflect low-frequency radio wavesD层。
词源
1930s: from an arbitrary use of the letter D.
| 单词 | D-layer |
| 释义 | D-layer/ˈdiːleɪə(r)/noun
词源 1930s: from an arbitrary use of the letter D. |
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