全世界都可以忘记:why the star is round?????????????

来源：百度文库 编辑：高考问答 时间：2024/05/04 12:56:09

是因为星球内部是高温的液体，而外壳是固体，所以在中部就会有一个固液界面，又由化学中的表面张力学说，液体与固体界面有固液过渡区，在这一位置的液体分子所受的分子间作用力的合力不为零，是指向液体形心的，也就是说过渡区的分子都有向内部钻的趋势，这就导致了内部液体是球形的，外壳浮在液体之上，自然也是球形的了。所以stars are round.

why the star is round????????????? why is the world dark ? Why is the human living Where is the cage ?Why? Why the sky is blue? Why is the library the highest building? why there is i in the world? why is the pig always eating??? Why is the letter E so important Why is U the jolliest letter