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fei666:Ans: \]3[Xw-$ 1.灯珠面积选更小的[表情] &fE2zTz 2.灯珠找更小发光角度的[表情] \AB)L{ 3.材料找更高折射率的[表情] cXb&Rm'L 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) HzsQ`M4cA
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