2391| 4
|
关于黄铜的几个简单问题,请教 |
| ||
| ||
点评
铜分冷热轧?你还是去百度先弄清楚冷热轧的概念,目的,意义在说吧
| ||
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, 2024-11-26 23:43 , Processed in 0.055508 second(s), 19 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.