On the basis of thread image acquisition, the edge of axial-section contour threads was obtained through using the edge detection algorithm.
在获取螺纹图像的基础上，通过边缘检测算法获取螺纹轴剖面外轮廓的边缘。
The gap crown between two work rolls of plate mills and the strip shape can be adjusted by axial shifting of the work rolls, both of them have a special contour.
板材轧机上一对带特殊辊型的工作辊轴向相对移动时，可改变辊缝凸度，调节板形。
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