在地形起伏较大地区，几何水准测量十分不便。
The traditional geometrical leveling is inconvenient in fluctuating area.
把全站仪三角高程的测量原理运用到城市管道工程的建设中，可以代替传统的用几何水准测量高程的方法。
Applying the measuring principle of the trigonometric leveling with total station into the construction of urban pipeline engineering can replace the traditional geometric leveling method.
GPS技术结合高精度、高分辨率的大地水准面模型可以取代传统的低等级水准测量，真正实现GPS定位技术在几何和物理意义上的三维定位功能。
GPS technique, combined with the high precision geodetic level model, can replace the traditional low-grade leveling, and realizes 3d GPS positioning function on the meaning of geometry and physics.
GPS技术结合高精度、高分辨率的大地水准面模型可以取代传统的低等级水准测量，真正实现GPS定位技术在几何和物理意义上的三维定位功能。
GPS technique, combined with the high precision geodetic level model, can replace the traditional low-grade leveling, and realizes 3d GPS positioning function on the meaning of geometry and physics.
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