精密测距
精密测距
器件构造工艺采用微细电火花加工技术。
Atmospheric vertical refraction is the main factor which affects the precision of EDM trigonometric levelling.大气垂直折光是影响EDM三角高程测量精度的制约因素之一。
The meteorological representative error is the main source of EDM error, as well as the main obstruct to realize the nominal accuracy of the precision electronic tachometer also.气象代表性误差是光电测距的主要误差来源,也是实现精密全站仪标称精度的主要障碍之一。