查询词典 geography

Based on hydrography and historic geography, the paper studied the environmental evolution of northern Ulan Buh Desert in historical time.

乌兰布和沙漠北部在先秦时期即已形成沙漠，由于黄河及屠申泽等水分条件的影响，当时尚存在着几处绿洲，西汉临戎等3座县城就建立在这些绿洲上。

Based on the eco- environment function, confirmed the constitution of eco- environment water demand(including the inside of the watercourse.and the ecological water demand of the outside of the watercourse such as ecological water demand of economical crop, of lake or reservoir and of cities.).③Analyzing the physical geography, hydrography, economy characteristic and water resource status, getting the proper calculation method. The Tennant applied to the eco- environment water demand of inside of the watercourse, woodland minmum eco- environment water demand calculation method applied to the eco- environment water demand of woodland, water ration method applied to farmland the eco- environment water demand, water evaporation method applied to the reservoir eco- environment water demand.

本文以流域生态环境需水为主要研究对象，因此重点阐述了流域生态环境需水量的分类和计算方法；②通过分析流域生态系统构成与流域生态环境功能，并分时段和河段考虑，确定了桃花江流域生态环境需水量的组成，即包括维持现状河道生态环境功能现状的现状生态环境需水量与流域生态环境改善的生态环境需水量，前者包括河道内生态环境需水量(维持河道基本生态功能需水量、维持河道自净稀释功能需水量、补充地下水水量及美化流域景观娱乐需水)与河道外生态环境需水量(流域内植被、森林、农田的需水量和与河道相连的池塘、水库等的需水量)；后者还包括为治理改善流域生态环境而拟规划林业生态建设所需水量；③对桃花江流域的自然地理、水文地质和社会经济特征以及水资源现状及其主要生态环境问题进行了综合分析，提出了适合桃花江流域的生态环境需水量计算方法，即采用Tennant法计算河道内生态环境需水量，采用林地最小生态环境需水量法计算林地生态环境需水量，采用需水定额法计算农田生态环境需水量，采用水面蒸发法计算水库、池塘生态环境需水量。

Today, a lot of application systems combine with GIS, such as diagnosis Expert System including the diagnosis the varies aspects of society, economy, and agriculture; forecast Expert System including the forecast of weather, hydrometeorology, population, geography, economy, military affairs, politics, etc; Decision Supporting System including the aspect of engineering design, programming, consultation, management etc.

现在许多应用系统所涉及到的问题都与地理信息有关，例如：诊断专家系统中的社会、农业、经济等方面的各种诊断和排错系统；预测专家系统中的气象、水文、人口、地理、经济、军事以及政治等方面的预测分析系统；工程设计、规划、咨询和管理决策等方面的专家系统，都离不开地理信息的支持。

Secondly, on the basis of the search for the geography and hydrometeorology in the Chabagou Catchment of Yellow River, which has the excessive and rough river sediments, TOPMODEL which is a Semi-distributed Physically-based Hydrological Model is used for the simulation of the rainfall-runoff and the accordant junction, then calibrates the parameters of the model with the data of

在"1 引言"中：建议围绕TOPMODEL模型在黄河多沙粗沙区干旱流域适用性的研究意义、国内外研究现状、本文的研究思路与预期目标进行改写，并给出有关的主要参考文献。

Interaction among Biosphere, Hydrosphere, Atmosphere and Lithosphere and its effect on the Earth's Surface System were elaborated in physical geography. Especially, it was emphasized that the Earth's Surface Environment is a system.

该课程主要是向学生介绍自然地理学的基础理论和方法，目的是培养学生形成地球表层环境的整体观念，了解自然环境发生的变化及其机理，懂得自然地理现象与土地科学的关系。

In order to improve the measuring-speed and precision of star sensor, cutting algorithm which is used far and wide currently in the field of physical geography is adopted first in the area of star map identification .

为了提高星敏感器的测量速度和精度，在星图识别中首次采用了在地球物理地质建模中有着广泛应用的剖分算法。

This article analyzed the third and fourth high school regional geography textbooks according to five factors from Bos' identity of map design model, including map content, generalization, map layout, symbol design and visual perception.

本文从Bos定义的地图设计模式中，选出地图内容、概括化、地图配置、符号设计和视觉感受五项影响因素，来分析高中区域地理教科书的第三和第四册部分。

Therefore, it is important to do research on the geography imaging system. It is the main purpose and foundation of my treatise.

因此，加强对新教材图像系统的研究，在中学地理教育教学改革中具有重要的理论与实践意义，这也正是本文选题的主要依据与研究目标。

The immediateness on geography the foundation that gender and economically complementary sex are area joint development .

地理上的接近性与经济上的互补性是区域合作开发的基础。

The research in the Virtual Reality technique not only has advantages of the development and application of Virtual Reality, but also has the great impellent effects in cartology、 geography information system、 digital city .

本文通过对虚拟现实技术、城市仿真的发展的认识，研究建立城市环境仿真系统的技术和方法，提出了几何建模、显示优化的一些算法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐