求翻译：控制测量分为平面控制测量与高程控制测量。平面控制测量确定控制点的平面坐标，高程控制测量确定控制点的高程。控制测量是为地形测图测定一定数量的平面和高程控制点。是什么意思？

Control measurement is divided into horizontal control measurements with the vertical control survey. The horizontal control measurements determine the plane coordinates of control points, vertical control survey to determine the elevation of control points. The control measurement is the determinat

The control diagraph is divided into the flat surface control diagraph and high distance to control the diagraph.The flat surface control measures to make sure the flat surface of the control point to sit the mark, the high distance control diagraph assurance control point of high distance.Control t

The control survey divides into the horizontal control survey and the elevation control survey.The horizontal control survey determined the control point the place coordinates, the elevation control survey determine the control point the elevation.The control survey is for the terrain mapping determ

Vertical control survey and control survey are divided into horizontal control survey. Plane of plane control survey to determine control points coordinates, elevation control measurement to determine points of elevation. Control measurement is determination of a number of planes for topographic map

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