2428| 9
|
為何切削速度越大,表面光亮度越大? |
| ||
| ||
| ||
點評
何為自然,就是現(xiàn)象?里面的原因呢,自然?
| ||
| ||
| ||
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, 2024-11-17 04:47 , Processed in 0.049237 second(s), 15 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.