a freely moving joint in which movement is limited to rotation;
"the articulation of the radius and ulna in the arm is a pivot joint"
双语例句
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。
