英语词汇“knife-edge refraction”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	knife-edge refraction
释义	knife-edge refraction knife-edge refraction [′nīf ‚ej ri′frak·shən] (electromagnetism) Radio propagation effect in which the atmospheric attenuation of a signal is reduced when the signal passes over and is diffracted by a sharp obstacle such as a mountain ridge.
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