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fei666:Ans: ".N{v1 1.灯珠面积选更小的[表情] u?g&(h 2.灯珠找更小发光角度的[表情] %;= ?r*] 3.材料找更高折射率的[表情] ,=c(P9}^ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) /lPnf7
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