weld flaw meaning in English

焊接裂缝
焊接缺陷，焊接裂纹

Simulation of welded flaws based on life - death element technique
技术的焊缝缺陷模拟
In view of theproperties of infrared thermal images , narrow - range zero - crossing edge detection method was applied to detect the edges of welding flaws and good results were obtained
针对红外热图象的灰度特性，提出了窄范围二阶导数过零边缘检测用于焊接缺陷的边缘提取，获得了较好的效果。