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fei666:Ans: 4*5 e0:O 1.灯珠面积选更小的[表情] "Ehh9 m1& 2.灯珠找更小发光角度的[表情] T0)bnjm 3.材料找更高折射率的[表情] fk>{ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) L%QRWhB
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