2540| 3
|
求通过移动链条实现变速的链轮变速箱的线索 |
| ||
| ||
| ||
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, 2024-12-23 17:10 , Processed in 0.051076 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.