![]() |
一個50噸的物體,自空中跌落1.5米,你怎么緩沖? |
點評
你挖墳.
| ||
| ||
| ||
| ||
Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
GMT+8, 2025-9-28 07:16 , Processed in 0.068014 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.