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双 u 形对接坡口
double u groove  detail>>
双v字形对接坡口
double vee groove double-vee but groove double-vee groove  detail>>
形对接坡口
double bevel groove k  detail>>
开式工形对接坡口
open-square butt groove  detail>>
双u形对接焊
double u butt groove weld double-u butt welding double-u groove welding  detail>>
双u形对接接头
double u butt joint double-u butt joint  detail>>
双u形坡口对接焊缝
double u butt weld double-u butt weld  detail>>
双v形对接焊
double-v butt weld  detail>>
双u型坡口
double u-groove  detail>>
双u形坡口
double-u groove  detail>>
双u形坡口焊
double u-weld  detail>>
双u形坡口焊缝
double u groove weld double-u groove weld  detail>>
双v形槽熔接, x形对接
double-v butt joint  detail>>
双j形坡口对接焊缝
double j butt weld double-j butt weld  detail>>
焊接坡口
welding bevel welding groove  detail>>
开焊接坡口
weld groove preparation weld preparation weldpreparation  detail>>
单u形坡口对接接头
single u butt joint  detail>>
双面u形坡口对接焊缝
double u butt weld double-u butt weld  detail>>