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为什么用烟雾防霜冻

更新时间: 2021-01-28 06:57:39     

1、大气逆辐射把地面辐射反射给大地,空气中的水汽和水汽凝结物吸收地面长波辐射的能力比较强。

2、天空中有云时(特别是浓密的低云)逆辐射更强,所以有云的夜晚通常比无云的夜晚温暖些。人造烟幕之所以能防御霜冻,道理也就在此。

关键词: 为什么 烟雾 霜冻

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