2709| 0
|
JB/T 4722-1992 管壳式换热器用螺纹换热管基本参数和技术条件 |
| ||
手机版|小黑屋|机械村
( 渝ICP备17010994号-1|渝公网安备50022702001048号 )
GMT+8, 2025-6-20 08:29 , Processed in 0.015353 second(s), 3 queries , Gzip On, Redis On.
Powered by 机械村
Copyright © 2012- Jixiecun.com