2143| 14
|
齿轮用什么材料好, 采用怎样热处理工艺? |
| ||
| ||
发表于 2019-9-18 16:39
|
显示全部楼层
| ||
| ||
| ||
发表于 2019-9-20 08:19
|
显示全部楼层
| ||
| ||
GMT+8, 2024-5-3 04:41 , Processed in 0.179035 second(s), 7 queries , MemCache On.
Powered by Discuz! X3.4 Licensed
© 2001-2023 Discuz! Team.