1859| 3
|
石油套管螺纹外螺纹加工时起刀点在端面还是倒角? |
小黑屋|手机版|Archiver|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
GMT+8, 2024-11-25 04:02 , Processed in 0.051709 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.