It actually makes a difference when it comes to measuring precipitation, in particular, for ground radars.

当涉及到测量降水，特别是地面雷达时，它实际上是有区别的。

Ground radars look at the sides of the raindrops and then estimate the vertical and horizontal size.

地面雷达观察雨滴的侧面，然后估计垂直和水平的大小。

Archaeologists also may locate buried remains by using such technologies as ground radar, magnetic-field recording, and metal detectors.

考古学家也可以利用地面雷达、磁场记录和金属探测器等技术来勘定被埋遗迹。