automatic arc welding head

例句：

1. 1. Theengineer used an automatic arc welding head to repair the damaged pipe.
   工程师使用自动电弧焊头来修复损坏的管道。
2. 2. The technician was required to usean automatic arc welding headfor the assembly process.
   技术人员被要求在装配过程中使用自动电弧焊头。
3. 3. Theconstruction site had a large number of automaticarc welding heads, whichmade the work faster and more efficient.
   施工现场有大量的自动电弧焊头，这使得工作更快、更高效。