soldered joint

例句：

1. 1. The car's engine was a welded joint that needed replacing.
   这辆车的引擎是一个需要更换的焊接接头。
2. 2. The construction workers used a solder joint to connect the pipes together.
   建筑工人使用焊接接头将管道连接在一起。
3. 3.The engineer carefully inspected the soldered joints on the bridge to ensure they were secure.
   工程师仔细检查了桥梁上焊接接头的安全性，以确保它们牢固。