Ball-and-socket joint

美 [bɔːl ənd ˈsɑːkɪt dʒɔɪnt]英 [bɔːl ənd ˈsɒkɪt dʒɔɪnt]

noun

anatomy 解球窝关节；杵臼关节
a joint such as the hip joint, in which a ball-shaped part moves inside a curved hollow part

1

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。
2

The hip joint is a ball-and-socket joint .

髋关节是一种杵臼关节。
3

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。