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fei666:Ans: VZw( "a*TB 1.灯珠面积选更小的[表情] N=:yl/M 2.灯珠找更小发光角度的[表情] +O9l@X$l= 3.材料找更高折射率的[表情] Mt-y{*6!k 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) _mFb+8C
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