Terms for subject Communications containing spaces

English	Chinese
broadcasting-satellite space station	卫星广播空间站
earth-space path propagation	地-空路径传播
loss relative to free space	相对于自由空间的损耗
natural space radiation	自然空间辐射
space-interval system	空间间隔制
space wave	天空电波
space wave	空间电波
space-wave propagation mode	空间波传播方式