spotwelding

例句：

1. 1.The engineer used a spotwelding technique to join the metal parts together.
   工程师使用点焊技术将金属部件连接在一起。
2. 2. In construction, spotwelding is often used to attach heavy materials together.
   在建筑中，点焊常用于将重材料连接在一起。
3. 3.The spotwelding process requires precise temperature control to ensure the joint is strong and durable.
   点焊过程需要精确的温度控制，以确保接头既坚固又耐用。