2495| 0
|
GB 908-1987 锻制圆钢和方钢尺寸、外形、重量及允许偏差 |
| ||||||||||||
|
||||||||||||
小黑屋|手机版|Archiver|电力建设网站 ( 苏ICP备16030970号-1 )|网站地图
GMT+8, 2024-5-19 20:20 , Processed in 0.199220 second(s), 26 queries .
Powered by Discuz! X3.4 Licensed
© 2001-2023 Discuz! Team.