“low-frequency propagation”的概念、定义、翻译、参考文献-科学参考

单词	low-frequency propagation
释义	low-frequency propagation [`lō ´frē·kwǝn·sē ´präp·ǝ`gā·shǝn] ^{ELECTROMAGNETISM} Propagation of radio waves at frequencies between 30 and 300 kilohertz.
随便看	tropospheric superrefraction tropospheric wave trouble-location problem troubleshoot trough trough aloft trough crossbedding troughed belt conveyor troughed roller conveyor trough fault troughing idler troughing rolls trough plane trough reef trough surface trough valley trough washer trout Trouton-Noble experiment Trouton's rule trowel troweling machine troy ounce troy pound superadiabatic lapse rate

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