楼主: zangfan
|
硬度比较高不易变形,质量还很轻的材料是什么? |
发表于 2011-9-2 20:01:31
|
显示全部楼层
| ||
小黑屋|手机版|Archiver|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
GMT+8, 2024-11-25 19:18 , Processed in 0.048475 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.