xiaosu2659 发表于 2011-9-4 10:15

UL1993部分语句不明白

8.18.2 Six samples shall be used for the test. Three of the samples shall have no emission-mix on one lamp filament and the other three samples shall have no emission-mix on the other lamp filament.这句话什么意思啊？求高手指点！谢谢

ethan 发表于 2011-9-24 00:21

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