GB-T 17578-1998 客车上部结构强度的规定.pdf (146.2 KB)
GB 11251-1989 合金结构钢热轧厚钢板.pdf (157.32 KB)
|手机版|小黑屋|Archiver|汽车工程师之家
( 渝ICP备18012993号-1 )
GMT+8, 17-2-2026 12:07 , Processed in 0.230101 second(s), 20 queries .
Powered by Discuz! X3.5
© 2001-2013 Comsenz Inc.