trigonometric levelling meaning in English

三角测高法
三角高程测量
三角水准测量

New trigonometric leveling in mine construction
新三角高程测量在矿山施工中的应用
Trigonometric leveling network
三角高程网
This paper gives a model of trigonometric leveling of atmospheric refraction and vertical deflection , then analyses every part of its accuracy and give a lists to analyses all kinds of effects caused by the errors of triangle leveling
摘要首先建立了大气折光和垂线偏差的三角高程测量模型，并对模型的精度进行了逐项分析，列表分析了各种误差对三角高程测量的影响。