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暖壶关上盖后为什么会发出响声
更新时间: 2020-10-19 00:00:00  

1、软木塞并不能够密封完全,必定有缝使瓶内气体和大气连通。

2、由于水是烧开的,如果把软木塞盖上,瓶内环境温度较高,饱和蒸汽压也高于大气压,这时,内外压力不平衡,必定压迫瓶内水蒸汽外溢。

3、在内外压力差驱动下,水蒸气沿着密封不严的缝外泄,产生滋滋的声音和吹口哨的原理是一样的。

关键词: 暖壶 关上 为什么 发出 响声

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