标题: IES LM-80-08 Measuring Lumen Maintenance of LED Light Sources [打印本页] 作者: shogun 时间: 2009-8-31 11:01 标题: IES LM-80-08 Measuring Lumen Maintenance of LED Light Sources IES_NA_LM-80-20084 R$ i4 d. C& K: t
LED灯具光通维持的测量6 M. g" \0 T% h* x4 b7 I
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Measuring Lumen Maintenance of LED Light Sources # g. m0 v, S P8 m