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人工降雨一般能下多久
更新时间: 2020-11-05 00:00:00  

人工降雨的时间一般都会在一个小时左右。一种是用飞机把干冰等冷却剂撒播到云中,使云内温度显著下降,细小的水滴冰晶迅速增多加大,迫使它下降形成降水。另一种是利用火箭、炮弹把化学药剂打向高空,轰击云层产生强大的冲击波,使云滴与云滴发生碰撞,合并增大成雨滴降落下来。

关键词: 人工降雨 一般 多久

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