11973| 3
|
請問如何計算實體的投影面積 |
| ||
| ||
| ||
|
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, 2025-5-3 16:43 , Processed in 0.053409 second(s), 13 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.