Research on the 1985 National ElevationDatum and the results obtained are highlighted.
阐述了1985国家高程基准研究工作和成果。
2
The transforming of survey datum and the control of axis, vertical level, elevation are of great importance on controlling quality of high-rise building construction.
在高层及超高层建筑工程中，测量基准传递和轴线、垂直度、高程控制是建筑物施工质量控制的重点内容之一。
3
The Beijing Fundamental Bench Mark (BFBM) is an important reference datum in the elevation control network in China.