... 返修焊rewelding 向上立焊vertical up welding 向下立焊vertical down welding ...
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... vertical shaft 直井 vertical upward welding 向上立焊 vertical wedge cut 垂直楔形掏槽 ...
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... vertical working position 垂直工作位置 vertical up position welding 向上立焊 welding in vertical down position 向下立焊 ...
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