研制空气静压轴承主轴回转精度检测系统，提出正弦回归法分离测量球的安装偏心，采用“反向法”剔除测量球的形状误差，并引用实验予以验证。 The rotary precision measurement system of the hydrostatic bearing spindle was developed. The eccentricity of the ball was measured by the sinusoidal regression method. The shape error of the measuring ball was removed by the “reverse method” and the experiment was used to verify the experiment.