ionospheric propagation

例句：

1. 1. The satellite's signal was transmitted through the ionosphere to reach Earth.
   卫星的信号通过电离层传输到达地球。
2. 2. The researchers used a technique called ionospheric propagation to study the effects of weather on communication systems.
   研究人员使用一种称为电离层传播的技术来研究天气对通信系统的影响。
3. 3. In this case, the ionosphere is playing a crucial role in the propagation of radiowaves.
   在这种情况下，电离层在无线电波的传播中起着至关重要的作用。