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fei666:Ans: ;a`I8F j 1.灯珠面积选更小的[表情] =xM:8 hm 2.灯珠找更小发光角度的[表情] {@>6E8)H5 3.材料找更高折射率的[表情] *w6(nG'M{ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) YfVZ59l4y6
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