|
1502| 0
|
求中碳钢在加热和锻造过程中的材料损耗率 |
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, 2024-11-26 02:31 , Processed in 0.043379 second(s), 16 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.
发表于 2010-9-11 11:13:17