binyew 发表于 2018-8-29 08:09:02

IEC 61857-31-2017 Electrical insulation systems – Procedures for thermal evalu

IEC 61857-31-2017 Electrical insulation systems – Procedures for thermal evaluation –Part 31：pplications with a designed life of 5 000 h or less

admin 发表于 2018-8-31 15:35:08

谢谢您的分享,金币已奖励!

sounnyday 发表于 2019-6-18 15:07:32

谢谢大大! 谢谢您的分享:)
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