中部不连续薄壁金属构件的叠层板成形方法
Date:2021-09-09 Hits:
First Author:hezhubin
Disigner of the Invention:梁江凯,林曼,孔朋,linyanli,yuanshijian
Application Number:202010249492.3
Authorization Date:2020-04-01
Authorization number:ZL 202010249492.3
Authorization Date:2020-04-01