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fei666:Ans: 67#;.}4a 1.燈珠面積選更小的[表情] ^v,^.>P 2.燈珠找更小發(fā)光角度的[表情] old}}>_ 3.材料找更高折射率的[表情] !6kLg1 4.燈珠離TIR再近一些[表情] (2023-01-03 22:49)