全站 | 2022-03-11 | |||
系统 | 2021-07-01 | |||
2608| 5
|
[讨论] 低碳合金钢淬火抗拉强度要求1600MPa,能达到吗? |
| ||
|
||
|
发表于 2007-2-19 00:25:48
|
显示全部楼层
| ||
|
||
|
发表于 2007-2-20 01:03:30
|
显示全部楼层
| ||
|
||
|
发表于 2007-2-23 01:17:33
|
显示全部楼层
| ||
|
||
|
Licensed Copyright © 2016-2020 http://www.3dportal.cn/ All Rights Reserved 京 ICP备13008828号