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fei666:Ans: /Va&k4 1.灯珠面积选更小的[表情] J6?_?XzToT 2.灯珠找更小发光角度的[表情] 1 _:1/~R1 3.材料找更高折射率的[表情] Q Kuc21 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) C[/Uy
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