3623| 6
|
為何鋼在水中淬火時(shí)產(chǎn)生明火? |
| ||
| ||
| ||
| ||
| ||
| ||
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, 2025-7-9 04:49 , Processed in 0.056183 second(s), 14 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.