When the second knife face is designed to be a non-linear face, the second knife face can be an inner cavetto line or an outer cavetto line;

当第二刀面设计成非线性面时，可以是内凹弧线或者是外凸弧线；

youdao

When the second knife face is designed to be a non-linear face, the second knife face can be an inner cavetto line or an outer cavetto line;

当第二刀面设计成非线性面时，可以是内凹弧线或者是外凸弧线；

youdao