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fei666:Ans: XEgJ7h_ 1.灯珠面积选更小的[表情] r/2= nE 2.灯珠找更小发光角度的[表情] 4b:|>Z- 3.材料找更高折射率的[表情] 0^lWy+ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) #L~i|(=U5
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