An analysis is given to the effect of centering error of the mechanical mounting of the master ball in a digital measurement upon the radial motion polar plot of an axis of rotation.

本文主要分析采用数字式测量时，标准测试球的安装偏心对回转轴径向误差运动圆图象的影响。

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On his follow through, he looks more like a power-hitter muscling a drive into the right-centerfield gap than a master ball-striker like Vijay Singh.

WSJ: Peter Uihlein's Masters Debut Raises Questions About Golf's Talent Pipeline

The Little Master almost always hits the ball with little effort with a classic straight bat.

BBC: Introduction