70| 0
|
GB/T 39142.1-2020 塑料-钢背二层粘接复合自润滑板材技术条件 第1部分:带改性聚四氟乙烯(PTFE)减摩层的板材 |
| ||
Archiver|手机版|小黑屋|标准网 ( 浙ICP备19005909号 )
GMT+8, 2024-5-9 23:38 , Processed in 0.085458 second(s), 33 queries .
Powered by Discuz! X3.4
© 2001-2023 Discuz! Team.