天顶距 meaning in Chinese
co-altitude
zenith angle
zenith distance
Examples
- Apparent zenith distance
视天顶距 - Spherical metal tank is measured by light tangent method , and the uncertainty of measurement results is calculated by analysing the centre distance , horizontal angle and left and right tangent distance to the top etc
环形金属罐的测量采用光切法，通过分析中心距、水平夹角、左右切点天顶距等参数，计算球形金属罐容量测量结果的不确定度。 - According to the engineering practice , the theoretical basis and method that survey directly the horizontal distance and height difference by the total station system as fourth grade and below fourth grade control network are put forward instead of surveying slant distance and zenith distance
摘要根据工程实践，提出了用全站仪直接测量平距、高差来代替测斜距、天顶距作四等及四等以下控制网测量的理论依据和方法，并以张河湾抽水蓄能电站施工控制网为例进行了比较计算。