The coaxiality is computed from the measured coordinates of laser spot center and measured circumference data in several sections of holes.

同轴度由多个截面的光斑中心坐标值和圆周采样数据按一定的方法计算。

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C or F value, the X and Y coordinates of the center of a pixel at the up-left corner of the image, can be measured according to characteristic point in topographic map.

值为栅格图像左上角像素中心在地图上的X，Y坐标，其值可以根据特征点在地形图中的坐标量测获得。

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Materials and Methods: The coordinates of the anterior commissure(AC) and posterior commissure (PC) were measured and compared in 17 patients with Parkinson's disease.

材料和方法：在17例帕金森病患者中测量和比较前连合（AC）和后连合（PC）的坐标。

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