pad welding

例句：

1. 1. The engineer used a special tool to perform the pad welding on the metal parts.
   工程师使用特殊的工具对金属部件进行点焊。
2. 2.The construction workers were busy with their pad welding work.
   建筑工人忙于他们的点焊工作。
3. 3.The new car has a unique design that requires careful pad welding to ensure its structural integrity.
   这款新车拥有独特的设计，需要仔细的点焊来确保其结构完整性。