![]() |
從業(yè)20年,,發(fā)明專利數十個,,我想培養(yǎng)熱愛機械的人 |
| ||
| ||
| ||
小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網安備33038202004372號 )
GMT+8, 2025-4-21 11:01 , Processed in 0.069644 second(s), 19 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.