4409| 12
|
请各位师傅帮忙看一下是什么问题,谢谢! |
| ||
| ||
| ||
| ||
点评
不管怎么洗,总得要洗干净。渗碳就是在金属表面渗入碳元素,如果有油污,就会阻拦碳的渗入,油污就成为防渗剂!
| ||
| ||
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, 2024-12-18 17:39 , Processed in 0.057546 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.