举报
WUXIEATON 发表于 2012-7-11 17:49 登录/注册后可看大图 可以这么说吗,基圆是渐开线的起始圆吗 ?
本版积分规则 发表回复 回帖后跳转到最后一页
|小黑屋|手机版|Archiver|齿轮论坛 www.gearbbs.com
GMT+8, 2025-5-10 14:53 , Processed in 0.212955 second(s), 8 queries , MemCache On.
Powered by Discuz! X3.4 Licensed
© 2001-2023 Discuz! Team.