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fei666:Ans: 4Z1ST; 1.灯珠面积选更小的[表情] R_(tjkT 2.灯珠找更小发光角度的[表情] TBs|r# 3.材料找更高折射率的[表情] ?Fi=P# 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) C^3 <={
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