Denote the center of Curvature at by.When the point moves along the plane curve, the trace curve of the point is called the evolute of the curve, denoted by, and is called the involute of the curve.
英
美
- 當點(diǎn)沿曲線(xiàn)移動(dòng)時(shí)，相應的曲率中心的軌跡曲線(xiàn)稱(chēng)為曲線(xiàn)的漸屈線(xiàn)，而曲線(xiàn)稱(chēng)為曲線(xiàn)的漸伸線(xiàn)。
