andit 发表于 2020-9-22 10:46:27

IEC 60747-5-8

IEC 60747-5-8:2019
Semiconductor devices - Part 5-8: Optoelectronic devices - Light emitting diodes - Test method of optoelectronic efficiencies of light emitting diodes


lotus999 发表于 2020-9-22 10:46:28

http://bbs.infoeach.com/forum.php?mod=viewthread&tid=240356&extra=

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