2121| 4
|
GB/Z 6413.1-2003 圆柱齿轮、锥齿轮和准双曲面齿轮 胶合承载能力计算方法 第1部分:... |
| ||||||||||||||||||||||||||
发表于 2022-5-1 17:23
|
显示全部楼层
| ||
发表于 2023-6-9 17:01
|
显示全部楼层
| ||
GMT+8, 2024-4-26 06:44 , Processed in 0.197896 second(s), 13 queries , MemCache On.
Powered by Discuz! X3.4 Licensed
© 2001-2023 Discuz! Team.