从原理上来讲，那就是说雨量可以进行实时测量，而这点是雨量计，雷达或者卫星都无法做到的。
That means rainfall could, in principle, be measured almost in real time, something that neither gauges nor radar nor satellites can manage.
运用雷达和雨量计联合估测了梅山水库集水区的降水分布。
The radar is used to combine with raingauge to measure and estimate the mean area precipitation in the Meishan reservoir area.
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