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钢珠点的不同半径对中心偏差的影响
Influence of different radius of the steel ball point on the center deviation. A: Magnitudes of the transverse coordinates of the ellipse center C(c, 0), the center of mass G(g, 0) and the projection center M(m, 0) obtained from the steel ball point at different radius; B: Central deviation εc of the ellipse center C(c, 0) from the projection center M(m, 0) and the central deviation εg of the center of mass G(g, 0) from the projection center M(m, 0).
