terrain undulation

Research of the influence of terrain undulation on the aeroplane location and its correction;

飞行器定位中的地形起伏影响及修正方法研究

Then,it researchs the methods to revise the impact of terrain undulation,and presents the arithmetics.

地面高程起伏对机载雷达成像定位影响较大,要实现飞行器的精确定位,必须修正地形起伏的影响。

Due to the influences of local topographical factors and terrain inter-shielding, calculation of DSR quantity over rugged terrains is very complex.

基于数字高程模型(DEM)数据和气象站观测资料建立了起伏地形下太阳直接辐射分布式计算模型,模型充分考虑了地形因子(坡向、坡度、地形相互遮蔽)对起伏地形下太阳直接辐射空间分布的影响;以1km×1km分辨率的DEM数据作为地形的综合反映,计算了起伏地形下黄河流域1km×1km分辨率太阳直接辐射的空间分布;深入分析了起伏地形下太阳直接辐射受地理、地形因子影响的变化规律。

Differing greatly from single-phase flow,multiphase flow will exhibit special hydraulic characteristics due to the slip between phases,especially for the pipeline in hilly terrains.

塔里木油田塔中401计量站至塔中四联合站输送管道(塔四联管道)累计起伏高度超过300m,起伏地形造成油气混输非常困难。

An analysis is made to study the factors influencing operational cost of pipeline and compressor station in the long-distance natural gas transmission pipeline over hilly terrain.

通过对起伏地形天然气长输管道系统中影响管道和压缩机站运行费用的各种因素的分析,结合起伏地形的特殊性,以输气管道终值费用最小为目标函数,加以水力、热力、流态等约束条件,建立了起伏地形天然气长输管道优化运行数学模型,并利用惩罚函数法对模型进行求解。

Using the DEM(digital elevation model) data of 1km1km resolution as input and giving an all-sided consideration on factors influencing direct solar radiation(DSR),a distributed model for calculating DSR over rugged terrains was developed,and monthly DSR with the resolution of 1km (1km) over the rugged terrains of China was gen.

基于1km×1km分辨率的数字高程模型(DEM)数据,全面考虑了地形因子对太阳直接辐射的影响,实现了实际起伏地形下我国太阳直接辐射的分布式模拟,计算了我国范围内1km×1km分辨率1—12月气候平均太阳直接辐射的空间分布。

Using DEM data of Chongqing, the distributions of direct and diffuse radiation over rugged terrains were simulated.

本文利用重庆及其周边地区的日射站和常规气象站水平面观测资料，建立不同时空尺度的太阳辐射估算模型；依据坡地直接辐射和散射辐射机理，以地理信息系统为数据处理平台，建立起伏地形下太阳辐射分布式估算模型；根据重庆1：25万DEM数据，对重庆实际复杂地形下太阳直接辐射和散射辐射进行了数值模拟，为起伏地形下辐射估算及其他地表气象要素的空间扩展提供有益的尝试。

Based on micro scale DEM datum, optimum size of analysis windows of relief, which is 5 km×5 km, is defined by means of windows analysis and sample statistical method.

基于全国 1:10 0万的栅格数字高程模型 ( DEM)数据 ,在 ARC/ INFO的 GRID模块支持下 ,利用窗口分析方法 ,经过采样统计 ,确定中国水土流失地形起伏度的最佳分析窗口大小为 5 km× 5 km;基于 5 km× 5 km的分析窗口 ,提取了中国水土流失地形起伏度 ,完成了中国水土流失地形起伏度制图 ;最后对中国水土流失地形起伏度进行了适用性分析 ,并将其初步应用于中国潜在水土流失评

The relief amplitude is a macro terrain factor for the undulation level of a region and is a terrain indicator to show the variation of regional topography.

地形的起伏度是反映地形起伏的宏观地形因子,是描述区域地形地貌变化的地形指标,在区域性研究中,应用DEM数据提取地形起伏度能够快速、直观地反映地形的起伏特征。

Relief is the largest relative elevation of unit area,which can reflect the relief of land surface;it\'s a quantitative index to describe geomorphologic forms.

地形起伏度,是单位面积内最大相对高程差,可反映地面相对高差,是描述地貌形态的定量指标。

A Study of the Geomorphologic Forms Classification Based on Relief

基于地形起伏度的地貌形态划分研究

Having become simpler in form and of lower relief. Used of a landform.

地形起伏缓和的较为简单的、起伏较平的。用于形容地形

The highway was contoured to the hills.

这条高速公路依丘陵地形起伏修筑。

The present relief of more than 1000 ft was due to excavation.

现在的地形起伏超过1000呎是削蚀作用造成的。

The Relief Degree of Land Surface in China and Its Correlation with Population Distribution;

中国地形起伏度及其与人口分布的相关性

The Impact of DEM Resolution on the Calculation of Height Anomaly Caused by Hypsography

DEM分辨率对计算地形起伏引起的高程异常的影响

A representation or description of the earth's topologic features above sea level, as on a map.

地形起伏图在地图上的高于海平面的地志的表现和描述

Study of CSAMT 2.5-dimensional Forward Modeling with Topography;

地形起伏条件下可控源音频大地电磁法2.5维正演研究

The Characters of Relief Amplitude in the Severest Disaster Area of Wenchuan Earthquake and Its Association Analysis with the Eco-environmental Damage

汶川地震极重灾区地形起伏度特征及其与生态环境受损关联分析

Relief must not be so excessive.

地形不应起伏很大。

The terrain may be too steep or the trails too rugged.

地形也许过于陡峭或者路程过于起伏。

Seen from an airplane, the terrain curves and waves.

从飞机上看下去，地形蜿蜒起伏。

Elaborate Spatial Distribution of Precipitation of ChongQing on Terrain;

起伏地形下重庆降水精细的空间分布

2D INVERSION OF VES DATA UNDER ROLLING TOPOGRAPHY AND ITS APPLICATION

起伏地形垂直电测深二维反演及应用

The Research on 3-D Resistivity Forward and Inversion Algorithm on Undulate Topography;

起伏地形三维电阻率正演模拟与反演成像研究

The Elaborate Distribution of Direct Solar Radiation over Rugged Terrains in the Guizhou Plateau

贵州高原起伏地形下太阳直接辐射的精细分布

The Spatial Distribution of Astronomical Radiation under the Rugged Terrain in Shenzhen

起伏地形下深圳市天文辐射的空间分布

Study on Optimal Operation of Hilly Long-distance Natural Gas Transmission Pipeline

起伏地形天然气长输管道运行优化研究