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fei666:Ans: :_~PU$%0 1.灯珠面积选更小的[表情] ;GSFQ:m[ 2.灯珠找更小发光角度的[表情] :E >n)_^ 3.材料找更高折射率的[表情] 2ucF(^ 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) ~U7\ LBF
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