3250| 7
|
對(duì)一塊鋁合金板,,為了減輕重量,,采用挖加強(qiáng)筋的方法,?請(qǐng)教 |
| ||
| ||
| ||
| ||
小黑屋|手機(jī)版|Archiver|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, 2025-2-23 18:22 , Processed in 0.057436 second(s), 13 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.