午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

One key technique of precipitation enhancement by AgI generator established at the windward side of the hill is to choose the occurring and lasting time of updrafts,which affect the rate of the valid nuclei into clouds.The feasibility of precipitation enhancement by AgI generator on the ground is analyzed.Using synoptic chart,satellite cloud picture,radar echo,and precipitation parameters,the technique of determining operating opportunity is discussed.