meridian arc

modern geodesy, is used the stars to determine the earth a between meridian arc length.

近代大地测量中，是利用恒星来测定地球某两地间子午线弧长的。

numerical integral method of calculating meridian arc length

计算子午线弧长的数值积分法

a calculating formula of meridian arc length of ellipsoid

椭球子午线弧长的一种计算方法

as long as the precise sensing a meridian arc length, we can easily calculate the circumference of the earth.

只要精确测知一段子午线弧长，便会很容易地计算出地球的周长。

formulae for calculation of meridian arc length by the parameters of space rectangular coordinates

以空间直角坐标为参数的子午线弧长计算公式

new solutions on inverse problem of meridian arc

子午线弧长反问题新解

this included angle, from port alexander to mr thain of meridian arc length between two of the central angle.

这个夹角，就是从亚历山大港到塞恩两地间子午线弧长所对应的圆心角。