在大型管结构的焊接工程中，相交双管的装配精度及支管下料高度一直未得到很好的解决。
In the welding engineering of large-scale pipe structures, the assembly precision and the branch pipe cutting curve of two intersecting pipes haven't been settled for a long time.
在大型管结构的焊接工程中，相交双管的装配精度及支管下料高度一直未得到很好的解决。
In the welding engineering of large-scale pipe structures, the assembly precision and the branch pipe cutting curve of two intersecting pipes haven't been settled for a long time.
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