This paper introduces the principle, characteristic and use of Kinematic Ball Bar System.

本文介绍机动球杆系统的基本原理、特点和用途。

youdao

A novel 3d laser ball bar (3d LBB) has been developed to determine the shaft or tool point positions rapidly and easily.

研制了一种三维激光球杆装置，能方便地测量机床主轴或刀具的空间运动位置。

youdao

The multiple motion errors duringcircular interpolation of NC machine tools can be obtained by using double ball bar tester.

可用双球规测量装置测得数控机床圆弧插补运动的综合误差。

youdao

Beckford smashed the ball against the bar from a central position, only for the ball to bounce down and clear of the goal without having been ruled to have gone over the line.

BBC: Everton 2-2 Aston Villa

In the first period, Hurst swivelled on Alan Ball's cross and struck the bar, the ball bouncing down near the goal-line.

BBC: SPORT | Football | The hat-trick Hall of Fame

Scott Arfield could have put the match beyond the hosts in injury time, but blasted the ball over the bar.

BBC: Ryan Flynn