keyhole plasma arc welding k-paw 小孔等离子弧焊接
plasma arc welding paw
等离子弧焊爪
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Using low cost charge coupled device (CCD), a vision sensing equipment in welding process was made, and a real time plasma arc welding (PAW) seam tracking system was implemented.
采用低成本电荷耦合器件制作了焊接过程视觉传感器，实现了一种等离子弧焊焊缝实时跟踪系统。
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