At any point the convergence is the angle between the meridian as represented on the plane and the n grid line . 一点上的收敛角是子午线在平面上的投影与N坐标线之间的角度。
precession is of utmost importance since it causes relatively rapid changes in coordinates d and б. 岁差之所以特别重要是因为它引起坐标d和比较迅速的变化。
They form a three-parametric, orthogonal net and may be chosen as coordinate lines of a special, curvilinear coordinate system . 它们形成三参数正交网，可以把它们选作特殊曲线坐标系的坐标线。
In photographic photometry we use photographic plates of a certain region of the sky to determine the coordinates of the stars . 在照相测光中，我们利用所拍摄的天空某一区域的照相底片来测定恒星的坐标。
if we graph in spherical polar coordinates we get surfaces with the familiar figure eight cross section; again, these are graphs and not orbital shapes. 如果我们在球极坐标中作图线，得到熟知的8字形截面；再说一遍，这是图线而不是轨道形状。
Converting between screen and client coordinates 屏幕坐标和工作区坐标之间的转换
To increment a control s location programmatically 以编程方式增加控件的位置坐标
Control is located at the specified coordinates 控件的哪一部分位于指定的坐标。
Three - dimensional target tracking and acquisition radar 三坐标目标跟踪和探测雷达
A kalman filtering algorithm in polar coordinates 极坐标下卡尔曼滤波算法的研究
