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fei666:Ans: -A<@Pg 1.灯珠面积选更小的[表情] &gS-.{w " 2.灯珠找更小发光角度的[表情] B%Qo6*b 3.材料找更高折射率的[表情] }ixCbuD 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) z)^.ai,: 0
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