coupling joint

例句：

1. 1. The engineer designed the machine with a special coupling joint to ensure smooth operation.
   工程师设计了一台机器，带有特殊的连接接头，以确保顺畅运行。
2. 2. The new model car has a more sophisticated coupling joint that improves fuel efficiency.
   新款汽车采用了更先进的连接接头，提高了燃油效率。
3. 3.The scientist discovered a new way to connect two pieces of equipment using a different type of coupling joint.
   科学家发现了一种新的方法，使用不同的连接接头将两种设备连接起来。