如图所示在开口的矿泉水瓶上打一个小孔水便从小孔喷出这是因为水对瓶的侧壁有压强此时如果堵住瓶口看到的现象是水不流出这是由于大气压的 Template




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tomski如图所示在开口的矿泉水瓶上打一个小孔水便从小孔喷出这是因为水对瓶的侧壁有压强此时如果堵住瓶口看到的现象是水不流出这是由于大气压的 coloring