熔焊成型中多道焊缝路径间距是影响零件成型精度的原因。
The path space was one of the reasons that affected the precision of parts in the rapid prototyping based welding.
高温高压临氢管道运行一段时间发现多道焊缝裂纹，较为罕见。
The hydrogenation pipe would weld crack after running for some time as high temperature and high pressure, and the phenomenon was rare.
针对埋弧焊多道焊的焊缝跟踪以及焊枪高度跟踪问题，设计了一种二维跟踪系统。
Regarding to submerged arc weld multi-pass weld track and height of weld gun, two-dimension track system is designed.
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