3306| 4
|
耐磨,、硬度又很高的是哪種材料? |
| ||
| ||
回復(fù) 2# chunzu 的帖子
| ||
我可幫你
| ||
小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
GMT+8, 2025-2-24 01:52 , Processed in 0.059047 second(s), 13 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.