straight-line seam welder

例句：

1. 1. The newwelder is very precise and efficient.
   这款新焊机非常精确且高效。
2. 2.The technician was able to fix the broken seam welder quickly.
   技术员迅速修理了损坏的焊机。
3. 3.The company has invested in a new model of straight-line seam welder for its production lines.
   该公司投资了一款新的直线缝焊接机，用于其生产线。