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来源：学生作业学帮网编辑：学帮网时间：2024/05/15 18:24:19

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打气引起瓶口的气体流动,从而使瓶口的大气压强小于标准气压,而瓶内大气压强不变,这时候瓶内大气压大于瓶口大气压,所以瓶子里的水被气压压了出来

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