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fei666:Ans: yFtd=AI'E 1.燈珠面積選更小的[表情] Cd>WUw 2.燈珠找更小發(fā)光角度的[表情] p(/dBt[3k 3.材料找更高折射率的[表情] Vnr[}<L 4.燈珠離TIR再近一些[表情] (2023-01-03 22:49) PqiB\~o@Z
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