如图所示aob是由某种透明物质制成的四分之一圆柱体的横截面圆柱体的半径为r折射率为$sqrt{2}$圆柱体的长度为h.今有一束平行光 Template




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tomski如图所示aob是由某种透明物质制成的四分之一圆柱体的横截面圆柱体的半径为r折射率为$sqrt{2}$圆柱体的长度为h.今有一束平行光 coloring