spot welding machine

例句：

1. 1. This spot welding machineis very efficient in welding smallparts together.
   这台点焊机在焊接小部件时非常高效。
2. 2. The engineerused the spot welding machine torepair the damaged part of the car.
   工程师使用点焊机修复了汽车的损坏部分。
3. 3. The spot welding machinewas used to join two pieces of metaltogether quickly and securely.
   点焊机被用来快速而安全地将两块金属连接在一起。