hand welding holdet

例句：

1. 1.The engineer used a hand welding holdet to fix the broken pipe.
   工程师使用手工焊接夹具来修复损坏的管道。
2. 2.He was using a hand welding holdet to solder the joints on the metal sheet.
   他正在使用手工焊接夹具来焊接金属板件上的接缝。
3. 3. The construction workers were using hand welding holdets to join the beams together.
   建筑工人正在使用手工焊接夹具将梁连接在一起。