40| 0
|
GB 20052-2020 电力变压器能效限定值及能效等级 |
| ||
|站长QQ:22646427|Archiver|手机版|小黑屋|查规范网
( 粤ICP备2024184902号-1 )|网站地图
GMT+8, 2025-5-9 22:31 , Processed in 0.137820 second(s), 41 queries .
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.