projection welding

例句：

1. 1. The engineerused a projection welding machine tofix the broken pipe.
   工程师使用投影焊接机来固定损坏的管道。
2. 2. The projector is capable of projecting images ontoa large screen.
   投影仪能够将图像投射到大型屏幕上。
3. 3. The team successfully completedthe project with the help of projection welding technology.
   在投影焊接技术的协助下，团队成功地完成了项目。