4088| 3
|
機(jī)械的效率是計(jì)算出來(lái)的還是實(shí)驗(yàn)做出來(lái)的? |
| ||
| ||
回復(fù)1樓
| ||
Archiver|手機(jī)版|小黑屋|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
GMT+8, 2025-7-13 23:42 , Processed in 0.055690 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.