boundary edge meaning in Chinese

边界边缘, 边界棱

The color gradient is a smooth shading of colors from the center point of the path to the outside boundary edge of the path
彩色渐变是从路径的中点到路径的外边界边缘的平滑的彩色渐变。
If all non - boundary edges have and only have two triangles mapping , left and right triangles , such triangle net is called general consistent
广义相容三角网格是所有非边界边都存在并且只存在左右两个三角形映射的三角网格。