swivel joint

• 回转接头

swivel joint的用法和样例：

例句

1. The design project has applied the return joint two times to the solution of mobility of the hood of the local exhauster system.It has been widely used in practice.
   该设计两次运用回转接头，解决了局部排风系统中罩口的机动功能，已被广泛地应用于现场排尘排毒工程中，使用方便，效果良好。