2119| 3
|
冷拉螺旋叶片开料计算经验公式 |
| ||
点评
额,是b乘l,看出来了
| ||
小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
GMT+8, 2024-11-27 01:09 , Processed in 0.058508 second(s), 20 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.