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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 g=n{G@ *N 2.光斑大小要10cm ]jjHIFX 3反光杯深度<60mm ,口径<50mm H}?"2jF 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] f?W_/daP
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