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水如何变成雪

更新时间: 2020-09-23 00:00:00     

水形成雪的三个条件是:饱和的水汽、足够低的温度、足量的凝结核。

水变成雪的过程:空气中的水汽在饱和的状态下,遇冷,会变成大量的冰晶。冰晶遇到空中足够的尘埃,这些尘埃是凝结核。冰晶会附着在凝结核上,越来越大。当大到足够降落到底面,水就变成雪。

关键词: 如何 变成

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