Typical example is a curved micro groove on a three-dimensional complex surface.
典型的例子是弯曲的细纹在三维复杂的表面。
2
The groove wall 61 on the side with shoulder rib is connected with the groove bottom deepest part 71 in that condition by the curved surface part 75 on the side with shoulder rib.
与轴肩挡边处于一边的沟墙61被连接于沟底深中心71处，这样一来，弯面75就与轴肩挡边在一边了。
3
Because there exists a chip-curling groove on the rake face, the rake face of a modern cutting tool used on NC machine tool is not a plane, but a curved surface.