UID:151492
UID:1
UID:155611
UID:165856
UID:194069
UID:233551
UID:253372
UID:216213
wanggang10:1.用1W LED (90lm)做一个手电,在2M处中心照度要达到4000lux 5wgeA^HE2y 2.光斑大小要10cm Li8$Rb~q 3反光杯深度<60mm ,口径<50mm [:*Jn} 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`yb{& ,?
UID:274820