Mapping agency Ordnance Survey (OS) has launched a service offering free and unrestricted access to most of its map data.
2
项目类型主要涉及控制测量、地形测量、线路测量、变形测量及地理信息系统等测量成果。
Primarily concerned with controlling the measurement of project types, topography, line measurement, deformation measurement and geographical information system measurement of results.
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本文结合某电站水下地形测量应用实例,找到了解决急湍河段水下地形测量的一种可行方法。
Combined with an underwater topography survey case at a hydropower station, this paper found a feasible method to survey underwater topography on swift current river.