英语语法分析

In general the accuracy of geoidal heights, as given by spirit levelling, much exceeds that of any other system.

一般说来，水准测量测出的大地水准面高程的精度，远远超过任何其它方法的精度。

The effects of surface vertical displacements and gravity changes upon the geoidal height variation have been also discussed.

讨论了表面垂直位移和重力变化对大地水准面高变化的影响。

This paper has discussed how to select geoidal model and how to determine normal height in GPS survey of long distance transmission line project.

就长距离超高压送电线路工程的GPS测量中如何选择大地水准面模型，如何确定GPS测量的高程等问题进行了讨论。