UID:151492
UID:296182
UID:297310
UID:274820
UID:216213
wanggang10:1.用1W LED (90lm)做一个手电,在2M处中心照度要达到4000lux z.jGVF4 2.光斑大小要10cm 3Y s|M%N 3反光杯深度<60mm ,口径<50mm ZU:gNO0 我不知能否实现,请各位高手帮忙指点,最好能提供您的计算方法,非常感谢!(2009-04-22 15:08)嬀/color] B@s\>QMm
UID:253372
UID:233551
UID:194069
UID:165856