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保温饭盒打不开怎么办

更新时间: 2021-01-28 09:44:25     

1、可以把保鲜饭盒放进一个更大的容器中,比如水盆,在水盆中倒入开水,将保鲜饭盒在开水中浸泡大约5分钟后,取出保鲜饭盒,用抹布擦干净,在用力一拧盖子,这时就可以很轻松地将饭盒打开了。

2、原理是当饭盒里的饭菜和空气在密封的饭盒里冷却之后,饭盒里的气压比外面低,有了压强差饭盒盖子就很难拧开了。所以通过加热保鲜饭盒,使饭盒里的空气受热膨胀,气压升高,当饭盒里的气压比饭盒外的气压高时,盖子就很容易打开了。

关键词: 保温 饭盒 怎么办

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