1·The crystallizing morphology on the weld seam was equiaxed grains and dendrites and that on the fusion area were columnar crystals.
焊缝区组织主要为等轴晶和树枝柱状晶，熔合区组织主要为柱状晶。
2·The paper has analyzed the content about image processing in the weld seam tracking system.
在此对焊缝自动跟踪系统中有关图像处理方面的内容作了一些分析。
3·The tracking system combines sutra PID control and ambiguous control to automatic tracking to the outside weld seam and improve the tracking system accuracy.
该系统采用经典PID控制和模糊控制结合的方法对外焊缝进行自动跟踪，提高了系统精度。
4·A method combining teaching and visual correction for weld seam tracking is presented to realize robotic automatic welding.
给出了一种示教与纠偏相结合的焊缝跟踪方法，用于实现机器人的自动焊接。
5·It analyses quadratic phase stainless and its metal compound generated from weld seam and HAZ, which affect welded pipe usage property.
分析了双相不锈钢及其焊缝和热影响区中产生的金属间化合物等二次相对焊管使用性能的影响。