3991| 15
|
我想让钢管盖和钢管接触部分密封 防止气体从螺纹孔漏出 怎么办 外行 ... |
| ||
| ||
| ||
| ||
| ||
| ||
小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
GMT+8, 2024-11-11 21:45 , Processed in 0.059522 second(s), 20 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.