| 释义 |
ball joint
ball jointn. See ball-and-socket joint.ball joint n (Mechanical Engineering) another name for ball-and-socket joint ball′-and-sock′et joint`
n. 1. Also called enarthrosis. an anatomical joint in which the rounded end of one bone fits into a cuplike end of the other bone, as at the hip or shoulder. 2. Also called ball joint. a similar mechanical joint used to connect rods, pipes, etc. [1660–70] ball joint
ball joint: see ball-and-socket jointball-and-socket joint,
in engineering, mechanical connection used between parts that must be allowed some relative angular motion in nearly all directions. As the name implies, the joint consists essentially of a spherical knob at the end of a shaft, with the knob fitting
..... Click the link for more information. .ball joint[′bȯl ‚jȯint] (anatomy) ball-and-socket joint ball jointA joint in which one part has a ball-shaped end that is held in a spherical shell attached to the other, thereby permitting the axis of one part to be set at any angle with respect to the other.ball-and-socket joint, ball joint1. 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 2. Anatomy a bony joint, such as the hip joint, in which a rounded head fits into a rounded cavity, allowing a wide range of movement MedicalSeeball-and-socket jointAcronymsSeeBJ |