1769
|
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, 2024-6-18 20:59, Processed in 0.052915 second(s), 18 queries , Gzip On.
? 2001-2017Comsenz Inc.