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fei666:Ans: 9KN75<n 1.灯珠面积选更小的[表情] v/ dSz/<] 2.灯珠找更小发光角度的[表情] u7=`u/ 3.材料找更高折射率的[表情] G'^Qi}o 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) Psij*%I4
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