相邻高差
adjacent height difference
EDM精密三角高程测量
EDM precise trigonometrical leveling
EDM三角高程测量
EDM trigonometric leveling
EDM triangle altimetric survey
GPS精密高差测量
GPS leveling of precise height difference
比较测高法
comparison method of height determination
比相测高
height finding by phase comparison
长安大学地质工程和测绘工程学院
The College of Geology Engineering and Surving Engineering
Changan University
地面高程测量
terrian elevation measurement
地形高程测量
Topographty elevation measurement