multi-head welder

例句：

1. 1.The multi-head welder was used to repair the old bridge.
   多头焊接机被用来修理旧桥。
2. 2.The engineer designed a multi-head welder for the construction site.
   工程师为工地设计了一台多头焊接机。
3. 3.The multi-head welder was used to join the metal plates together quickly and efficiently.
   多头焊接机被用来快速而有效地将金属板连接在一起。