keystone ring

网络释义

1.	梯形环汽车专业词汇总结. - 虎子的日志 - 网易博客 ... 闭合环 closed ring 梯形环 keystone ring 半梯形环 half keystone ring ... ailiudonghu.blog.163.com
2.	半梯形环 rung - 英汉词典 ... closed ring 梯形环 keystone ring 半梯形环 half keystone ring 矩形环 ... cn.wordmind.com
3.	扭转环 ... keystone piston ring groove gauge group；扭转环量规组 keystone ring；扭转环 keystone style piston；扭转环型活塞 ... www.mapeng.net