double passage swivel joint
load-carrying swivel joint
Swivel Joint
转环接合
旋转接头
旋转接合
回转铰链接合
回转节
回转接头
转动联结
转动活节
telescoping swivel joint
adjustable swivel chair
back swivel sliver guide
center-hung swivel window
double tube double swivel barrel
double tube single swivel barrel
high-speed railway swivel bridge
horizontal swivel method