A new data acquisition technology of high resolution DEM is presented.
介绍了高精度DEM数据采集的新技术。
As a digital expression of earth surface, DEM has a widespread application.
DEM作为地球表面的数字表达，有着广泛的应用。
High quality DEM construction is the important precondition of the application.
高质量数字高程模型的建立是DEM应用的重要前提。
At first, the basic knowledge of DEM and its application in the hydrology were introduced.
首先介绍了数字高程模型的基本知识，及其在水文中应用。
At first, the basic knowledge of DEM and its application in the hydrology were introduced.
首先介绍了数字高程模型的基本知识，及其在水文中应用。
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