ball-joint

基本解释

Worse, he fractured his hip so badly that the ball of the ball-and-socket joint broke off.
更糟的是，髋部严重骨折，导致股骨头从球窝关节脱出。
Cast ball-and-socket joint is used as the column support, while circular hollow section welded joint is used at the top of the tube.
北京奥运会老山自行车馆的屋顶采用了双层球面网壳结构，柱脚及柱顶分别采用了铸钢球铰支座和圆钢管相贯节点。
This term refers to some young women who spend a lot of time with ball-joint dolls. They "adopt"(buy) dolls and treat them like their own kids.
这个短语指的是一些将大量时间花费在关节娃娃上面的年轻女士，她们购买一些洋娃娃，当作自己的孩子对待。
shiny.21.blog.163.com

a coupling between two rods, tubes, etc, that consists of a spherical part fitting into a spherical socket, allowing free movement within a specific conical volume

球铰
By application Navier-Stokes equations under the sphere coordinate, the calculation formula of the support load of the oil film of the ball joint coupling based on hydrostatic bearing. Support property equation of this ball joint coupling was set up.
运用球坐标系下的纳维-斯拖克斯方程组推导出静压支承球铰副油膜支承反力的求解公式，给出了静压支承球铰副油膜支承特性方程，得出了静压支承球铰副油膜刚度计算公式；4．研究了静压支承球铰副的动态特性。
球形连接
环形接头
球窝接头
球节