circular groove

• 环钩,圆槽,环形槽

circular groove的用法和样例：

例句

1. Grease from a standard grease fitting is distributed to the shaft through a groove in the outside diameter of the bearing and from radial holes in the bushing's well.
   从标准润滑油嘴注入的润滑油通过轴承外径的环形槽分流到阀轴上，并且从径向孔流入轴衬壁上。