查询词典 dem

And build up DEM and equal depth line DEM in research area as the sirnulation's and loss evaluation's condition.

研究建立了实验流域数字高程模型以及下游平原区结合堤防道路的等淹没范围线数字模型，为洪水演进模拟和洪灾评估创造了条件。

In order to describe and control the space change, it is important to make sure right resolution. Distributed hydrological modeling is base on the watershed characteristics extracted from digital elevation...

对50m分辨率的DEM平均取样获得150～950m的9组DEM，对不同分辨率下提取的流域特征值进行了统计分析，并采用信息熵度量不同分辨率的信息量。

The major findings of this research can be summarized as follow:1 The comparison of USPED model-estimated amounts of soil erosion based on four different scales of DEMs (1:250,000, 1:50,000, 1:10,000, and 1:5,000) indicates that 1:50,000 -scale DEM is almost as good as higher-resolution DEM data in providing needed topographic information for assessing soil erosion, whereas 1:250,000-scale DEM underestimates soil erosion mainly because rill erosion and sheet erosion are greatly underestimated.2 Since precipitation is the most important forcing factor for soil erosion, the accuracy of soil-erosion estimates understandably relies on the adequacy of spatially distributing point-observed precipitation data.

取得的主要成果如下：(1)基于四个尺度(1∶250，000，1∶50，000，1∶10，000，and 1∶5，000)的数字高程模型和USPED模型计算的土壤侵蚀结果对比表明，1∶50，000的数字高程模型与更高分辨率数字高程模型提供了几乎一样的用以估算土壤侵蚀所需的地形信息，而1∶250，000的数字高程模型，由于过低的估算了细沟侵蚀和片蚀，从而过低的估算了土壤侵蚀的总量。

W'en Ah tell dem dat an' tell dem how good Miss Ellen ter de niggers, an' how she set up a whole week wid me w'en Ah had de pneumony, dey doan b 'lieve me.

我把情况告诉他们，还对他们说太太对待黑人多么好，我得肺炎的时候，她连觉也不睡，细心照料我一个星期，可他们都不相信。

Traditional error models can not give precised error prediction or lack of universality in use.

本文对目前DEM精度研究现状进行了较为系统的回顾和剖析，指出了传统的DEM全局精度指标和。。。

The main contents on visualization of this paper involve the opening figure base of OpenGL and the technique of Java3D and so on. And we have achieved three dimensional modeling on the base of TIN from the data of DEM. We also have achieved the three dimensional render and visualization superposing the the characteristics of topography from DEM.

本文在可视化的主要研究内容为，采OpenGL开放图形库和Java3D技术，实现了数字高程模型的三角网地形模型的三维建模，并实现了将流域特征信息与三维模型相叠加的动态三维渲染显示。

The acquisition date of ETM+ is October 29, 1999. We get digital elevation model data from (1∶)250 000 topography map of Minhe area. The format of DEM is MapInfo exchange format *.mif which converted to coordinate. After primary treatment of the raw data, the DEM data is derived from the contour line. The ETM+ scenes are rectified using the DEM and sun-illumination model. NDVI and other three indexes from Tasseled Cap transform were calculated from RS data.

依据其理论方法，对青海省民和地区的遥感数据--ETM+进行了分类，选用的ETM+数据为1999年10月份数据，数字高程数据来自于1：25万民和幅地形图，数据格式为MapInfo通用格式MIF，数据进行了坐标转换，对原始数据进行了处理，从等高线中提取数字高程。

Down in texas,dope house is so relentless.the fluff is endless.smokin wit my lawer and myto dem older cats.Dem dolger sax,wit a coffee grinder at my mercy.Dun rolled aspirit lifted though.

下列搜索结果均系通过搜索引擎技术从第三方网站自动搜录所得，概与我公司无关。

To consume less time and less memory, this paper presents a flow to generate DEM from Lidar data.

为了减少在使用LIdar数据生产DEM过程中的内存和时间消耗，本文提出了一种新的生产流程。

Finally, the paper assesses the precision of the DEM data.

论文也研究了DEM精度评定的方法，并结合实例进行了分析。

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。