在全站仪测定一定数量的3维控制点后，利用数码像机进行近景摄影测量，加密测绘水轮机转轮叶片。
After having measured some 3d control points by total station, the digital close range photogrammetry and surveying the Vance of water wheel can be made.
航测外业控制测量是为内业加密、测图提供准确、完整、清晰的像片控制点成图资料，以保证成图质量。
On the field work of aerial surveying, control surveying offers some mapping data of photograph's control points which are accurate, complete and clear to satisfy the quality of map.
航测外业控制测量是为内业加密、测图提供准确、完整、清晰的像片控制点成图资料，以保证成图质量。
On the field work of aerial surveying, control surveying offers some mapping data of photograph's control points which are accurate, complete and clear to satisfy the quality of map.
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