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为什么晴天比雨天气压高
更新时间: 2020-11-02 00:00:00  

因为雨天空气湿度大,云会放电,气压就低。气压是指作用在单位面积上的大气压力,在数值上等于单位面积上向上延伸到大气上界的垂直空气柱所受到的重力。气压的国际制单位是帕斯卡,简称帕,符号是Pa。气象学中,人们一般用千帕(kPa)或使用百帕(hpa)作为单位。

关键词: 为什么 晴天 雨天 气压

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