swivel coupling

• 转动式联轴器,转环式连接器,旋转接头,转环式车钩

swivel coupling的用法和样例：

例句

1. Of course you cannot contact openings because roller intine is rotating, and steam condensate drains and swivel joint is fixed not generated noise and damage to drainage pipes.
   当然管口不能接触内壁，因为辊筒是旋转的，而冷凝水排水管和蒸汽旋转接头是固定不动的，否则会产生噪音和损坏排水管。