为什么密度大于水的物体在水中不一定会沉底
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![为什么密度大于水的物体在水中不一定会沉底](/uploads/image/z/9944271-63-1.jpg?t=%E4%B8%BA%E4%BB%80%E4%B9%88%E5%AF%86%E5%BA%A6%E5%A4%A7%E4%BA%8E%E6%B0%B4%E7%9A%84%E7%89%A9%E4%BD%93%E5%9C%A8%E6%B0%B4%E4%B8%AD%E4%B8%8D%E4%B8%80%E5%AE%9A%E4%BC%9A%E6%B2%89%E5%BA%95)
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