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fei666:Ans: 6 0C;J!D 1.灯珠面积选更小的[表情] jC_7cAsl 2.灯珠找更小发光角度的[表情] Y)D~@|D, 3.材料找更高折射率的[表情] 38Rod]\E 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) dFdll3bC
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