查询词典 dem

The research at home and abroad on the quantitative extraction methods of numerical geomorphological information mostly focus on the classification of slope by using DEM, the calculation of geomorphology in large areas, the typical line extraction of large geomorphological units such as mountains and basins or special geomorphology.

国内外有关数字地貌信息定量提取方法的研究多集中在利用DEN进行坡度分级、大区域起伏度计算、山地和盆地等大地貌单元、特殊地貌特征线的提取上，而利用DEM和遥感影像进行典型地貌和微地貌信息提取的研究相对较少。

On the basis of the properties of central projection and orthographic projection, the differences of different rectification approaches based on orthographic projection are explained, and it is suggested that oblique-plane-rectified photograph can produce orthographic representation of flat terrain cover; differential rectification of RS imagery based on DEM can produce orthographic representation of waved terrain cover; and true orthographic rectification based on digital ground-object model can produce orthographic representation of single objects on ground.

根据中心投影和正射投影的特点，从理论上说明了不同正射投影纠正方法之间存在的差异，认为：基于透视变换的像片倾斜纠正可生成水平地表覆被的正射投影表达；基于DEM的正射影像微分纠正可生成起伏地表覆被的正射投影表达；基于数字地物模型的真正射纠正可生成独立地物的正射投影表达。

The author advanced the elements of the geographic analysis techniques based on gridly DEM, which consists of the definition of ground surface topographic structure, the characteristic definition of combinatorial topographic units, analysis methods and algorithm design.

提出了基于栅格DEM的地学分析技术的组成部分，包括：地表特征形态结构定义、地理单元的组合特征定义、分析方法和算法设计；提出了形态特征分析和溢流分析相结合的方法来，剖面线集综合分析方法等新方法和新算法。

In the fifth chapter, we discussed firstly the ways and process of runoff modeling. The DEM of research zone was built through GRID module in ARC/INF software, and the conflux zones were defined in the upper river of Suzhou Creek.

第五章首先探讨了径流模拟的方法和过程，通过GRID模块，建立了研究区域的数字高程模型，并通过对DEM的修正，确定了苏州河上游的汇流集流区域。

This Paper discusses the theories and methods on making high quality DEM bases on terrain feature from digital contour line.

本文系统地阐述了基于等高线数据建立高质量DEM的理论和方法。

The reliability and validity of DEM in the analysis of impact damping have been verified.

证明了本文提出的冲击减振分析的DEM的可靠性和正确性。

Lots of experiments are performed to verify the DEM's results of impact damping analysis.

对本文提出的冲击减振分析的DEM进行了大量的实验验证。

In this paper, a new DEM digital watermarking algorithm based on the analysis of slope is proposed.

提出一种新的基于坡度分析的DEM数字水印算法。

Chapter 3 is the study of the distributed hydrological model based on the DEM.

第三章是基于DEM的流域分布式水文模型的研究。

" "You boys like me to tell you about some of dem hard times I been through in London?

你像我这样的男孩告诉我的DEM在伦敦的一些经历艰难的时刻吗？

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。