f region是什么意思_f region用英语怎么说_f region的翻译_f region翻译成_f region的中文意思_f region怎么读,f region的读音,f region的用法,f region的例句
翻译
F region
['ef,ri:dʒiən]
释义
[气象学]F区,F(电离)层
英英释义
Noun
1. the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission