Off-target distance is a key index for measuring quality of borehole trajectory, of which the key is to find out solution to coordinates of target points.
靶心距是衡量井眼轨迹质量的一个关键指标，计算靶心距的核心问题是求解入靶点的坐标。
2
A method for calculating and measuring the coordinatesof centering stakes using line control counts in plane control meshwork is introduced in highway construction in this paper.
介绍了利用线路平面控制网的控制点测设道路工程中组合曲线中线桩点位的坐标计算、测设方法。
3
According to the theoretical tooth surface model, the measuring grids schema is accomplished on the rotary projection of tooth surface, and coordinates and the normal of the grids are obtained.