“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	marine radar marine radioactive contamimation marine radioactive contaminations marine radioactive measuring instrument marine radio aids marine radioecology marine radio navigation marine ranch marine refrigerated equipment marine regional geological maps marine remote sensing survey marine renewable resources marine research station marine resource marine resource chart marine restoration ecology marine reverberation marine rigthts and interests chart Mariner probe marine salinity model marine salt difference energy marine satellite navigation marine search & rescue marine secondary production marine security

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