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为什么玻璃杯子倒热水就炸了

更新时间: 2020-09-23 00:00:00     

玻璃杯炸裂的原因是因为膨胀,杯里一倒入热水,杯子内壁就受热急剧膨胀,但杯外壁却还是保持原样,内层玻璃突然向外大力挤压,杯子就破裂了。如果事先让杯子内外侧同时受热,然后再倒入热水,杯子内外膨胀的程度相差不那么大,就不会炸裂了。

关键词: 为什么 玻璃 杯子 热水

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