4921| 5
|
常用金属材料的硬度是怎么样排列的? |
| ||
发表于 2011-5-9 20:51:25
|
显示全部楼层
| ||
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 23:28 , Processed in 0.054757 second(s), 16 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.