初中物理第一册第十二节在谈到大气压的变化时说：“一般的说，晴天的大气压比阴天的高，冬天的大气压比夏天的高．”对此，有关中学教学参考杂志上有不少解释．关于“冬季的大气压比夏天高”的解释无疑是正确的，也容易理解．对“晴天的大气压比阴天的高”的原因，一般是... When talking about changes in atmospheric pressure, Section 12 of Book One of Junior Physics says, “Generally speaking, the atmospheric pressure in sunny days is higher than that in cloudy days, and the atmospheric pressure in winter is higher than in summer.” There are quite a few explanations. The explanation that “the atmospheric pressure in winter is higher than summer” is undoubtedly correct and easy to understand. The reason why “the barometric pressure is higher than the cloudy sky” is generally...