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wanggang10:1.用1W LED (90lm)做一个手电,在2M处中心照度要达到4000lux M"]~}* 2.光斑大小要10cm 8uX1('+T* 3反光杯深度<60mm ,口径<50mm 2c <Qh= 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] ,"u-V<>6O
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