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为什么饺子熟了会浮起来

更新时间: 2020-10-09 00:00:00     

原因:饺子的密度改变。

生饺子的密度比水大,放在水中会下沉,随着水温升高,水蒸气会进入饺子的皮和馅儿中,饺子会渐渐膨胀,体积增大,尤其是馅儿的空气膨胀程度更大,整个饺子的体积增大,密度变小,小于水的密度后,饺子就会上浮。

关键词: 为什么 饺子 起来

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