“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	differential equation on a torus differential equations of motion of a particle differential equation with constant coefficients differential equation with delays differential equation with randomness differential equation with small parameter differential equation with time lags differential equation with total differential differential equation with variable coefficients differential evolution differential evolution algorithm differential expansion differential expansion monitor differential exponent differential expression differential expression of elastic mechanical problem differential extension differential extension ring differential-extremal differential fiber differential field differential flat systems differential flexure differential form differential form of Joule law

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