“knife-edge refraction”的概念、定义、翻译、参考文献-科学参考

单词	knife-edge refraction
释义	knife-edge refraction [`nīf ´ej ri`frak·shǝn] ^{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.
随便看	flame repellent flame retardant flame-retarded resin flame spectrometry flame spectrophotometry flame spectrum flame speed flame spraying flame straightening flamethrower flame trap flame treating flamingo flammability flammability limits flammable flammable liquid Flamsteed's number flan Flanders storm Flandrian transgression flange flanged pipe flange isolator flange union

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