英语词汇“lowest useful high frequency”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	lowest useful high frequency
释义	lowest useful high frequency lowest useful high frequency [′lō·əst ¦yüs·fəl ′hī ‚frē·kwən·sē] (communications) The lowest high frequency that is effective at a specified time for ionospheric propagation of radio waves between two specified points. Abbreviated LUHF.
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