hand-held welder

例句：

1. 1. This hand-held welder is easy to use and can quickly fix small repairs.
   这款手持焊机使用方便，可以快速修理小问题。
2. 2. The construction workers used a hand-held welder to join the metal beams together.
   建筑工人使用手持焊机将金属梁连接在一起。
3. 3.The engineer tested the hand-held welder's performance under different conditions.
   工程师在不同的条件下测试手持焊机的性能。