UID:322425
UID:322562
UID:299242
fei666:Ans: Mb3,! 1.灯珠面积选更小的[表情] ,V)yOLApVj 2.灯珠找更小发光角度的[表情] 6h}f^eJ:K, 3.材料找更高折射率的[表情] 6;dB 4.灯珠离TIR再近一些[表情] (2023-01-03 22:49) LH]nJdq?)
UID:325395