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

单词	sky wave propagation for low frequency
释义	sky wave propagation for low frequency Encyclopedia 工学电离层电波传播释 sky wave propagation for low frequency低频天波传播地面发射的频率为30～300千赫的无线电波，经电离层反射再回到地面的传播方式。
随便看	energy isolation energy jump energy landscape energy landscape model energy landscape theory energy landscape theory of protein folding energy law energy legal system energy level energy level diagram energy-level diagram energy level lifetime energy level structure energy level width energy liberation energy loss energy-loss function energy management energy management for physical machine energy management system energy market regulation energy materials energy metabolism energy metabolism in exercise energymeter

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