2225| 14
|
CN共渗的钢件4140,芯部硬度到55HRC对性能有什么影响? |
| ||
| ||
点评
圆柱,中间有通孔,直径120mm,长300
| ||
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, 2024-11-12 07:34 , Processed in 0.054991 second(s), 22 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.