3804| 6
|
GB985-88 氣焊.手工電弧焊及氣體保護焊焊縫坡口的基本形式與尺寸 |
| ||
| ||
| ||
| ||
Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
GMT+8, 2025-8-21 19:04 , Processed in 0.069396 second(s), 15 queries , Gzip On.
Powered by Discuz! X3.5 Licensed
© 2001-2025 Discuz! Team.