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澳镭照明——LED中的UL认证 - 豆瓣
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澳镭照明——LED中的UL认证 - 豆瓣
Website URL:
https://www.douban.com/note/272271627/
Category:
Electricity
澳镭照明 Category Control Number 类别控制编号(CCN) 是一套可以用来指定和识别UL的列名信息系统(LIS)所涵盖的单个产品类别的字母数字式系统。 ...
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