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鸡蛋煮熟后在水里是浮的还是沉的
更新时间: 2020-06-28 00:00:00  

鸡蛋生的时候会浮在水上,直接原因是鸡蛋生的时候密度小于水,生鸡蛋的蛋清和蛋白内含有很多气体,这样就使生鸡蛋的密度小一些。鸡蛋在煮的时候其中的气体会被热赶出来,熟鸡蛋的密度变大,放在水中也就沉下去了。

关键词: 鸡蛋 还是

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