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fei666:Ans: j>6{PDaT 1.灯珠面积选更小的[表情] ev; &$Hc 2.灯珠找更小发光角度的[表情] aoBM_# 3.材料找更高折射率的[表情] }b-?Dm_H 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) f; 22viE
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