13445| 12
|
45#钢调质后表面再镀铬后钻头打不动,请教 |
| ||
| ||
| ||
点评
正解
| ||
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, 2024-11-11 10:59 , Processed in 0.064352 second(s), 20 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.