7693| 15
|
要设计耐用性比较高的钻套,用什么材质较好? |
| ||
| |
| |
| ||
| |
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, 2024-12-13 01:55 , Processed in 0.049284 second(s), 15 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.