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气泡状的物体 来自维基百科，自由的百科全书
气泡是指液体中的气体，此时气体在液体中会呈现球状。而气体中的液体状小球则被称为水滴。[1]人们之所以能看到气泡，是因为气泡的折射率与周围物质不同。例如空气的折射率约为1.0003，水的折射率约为1.333。
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