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fei666:Ans: h?[|1.lJx( 1.灯珠面积选更小的[表情] mC2K &'[ 2.灯珠找更小发光角度的[表情] M8nfbc^ 3.材料找更高折射率的[表情] ;NU-\<Q{ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) P9`R~HO'`
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