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fei666:Ans: /3"e3{uy 1.灯珠面积选更小的[表情] o i,g 2.灯珠找更小发光角度的[表情] oPC IlH 3.材料找更高折射率的[表情] #Fb0;H9` 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) )BM WC k
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