backward scattering

例句：

1. 1. Backscattering is a phenomenon where particles in the atmosphere are scattered in all directions due to the Earth's magnetic field.
   背散射是一种现象，其中大气中的粒子由于地球的磁场而在所有方向上被散射。
2. 2. In this experiment, we observed backward scattering of light from a laser beam.
   在这个实验中，我们观察到了激光束的光的背散射。
3. 3. The backscattering signal was used to determine the distance between the satellite and the ground station.
   背散射信号被用来确定卫星和地面站之间的距离。