![]() |
天下大勢,浩浩湯湯,不讀書怎么會知道? |
點評
先用水選,把塑料等輕物體選出,剩下銅鋁,再用重力選,最后,對小顆粒用浮選,找一個密度合適的液體,
| ||
小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
GMT+8, 2025-5-14 09:54 , Processed in 0.062698 second(s), 13 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.