16988
|
16
|
我设计的十二速齿轮变速播种机,仅用九个齿轮 |
|
||
|
||
小黑屋|手机版|Archiver|机械必威体育网址(京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号)
GMT+8, 2024-7-18 07:25, Processed in 0.057856 second(s), 20 queries , Gzip On.
? 2001-2017Comsenz Inc.