GPS高差转换
GPS Height Differences Transformaition
GPS height difference transformation
GPS精密高差测量
GPS leveling of precise height difference
T型高差固定结构
T-shaped exit fixed mechanism
磁场中心高差
level difference between magnetic-cores of stator and rotator
大高差
big height difference
high difference in level of span
large height difference
大高差地段
big height difference section
等高差
equation of equal altitude
复测高程和相邻点高差较差
divergence tolerance of elevation and altitude difference between adjoining points
高差闭合差
closed difference of height difference
高差差分改正
Revise Theory of Height-differential