7698| 15
|
把直線運動轉化為旋轉運動的方法和機構有哪些。 |
點評
肯定算
| ||
| ||
小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
GMT+8, 2024-11-21 00:14 , Processed in 0.056863 second(s), 19 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.