水系

从DEM中自动提取自然水系

Automatic Extraction of Natural River System from DEM

本研究首先根据综合自然地理因素（包括海拔、地形、气候、植被、水系、农业等），利用GIS技术手段，将中国版图划分成124个基本单元。

On the basis of comprehensive natural factors including altitude , topography , climate , vegetation , river system , farm belt , etc. , the present paper has divided China ′ s territory into 124 basic units by using the GIS technique .

一条运河把该河与亚马逊水系连接起来。

The river is connected to the Amazon system by a canal .

使用闭合循环水系的工厂，通常需要以某些方法处理过剩的水。

The plants using a closed-circuit water system will usually require some means of treatment of excess water .

长江水系中华绒螯蟹线粒体DNA的遗传多样性研究

Study on mitochondrial DNA diversity of Eriocheir sinensis in ChangJiang River

基于DEM流域河网水系的提取研究

Study of extracting drainage network of watershed from digital elevation model

ICP-MS测定水系沉积物和土壤中的W、Mo等金属元素

Determination of Metals in Stream Sediment and Soil by ICP-MS

利用DEM和遥感进行平原地区地表水系的研究

Study of Surface Water System in Plain Area by DEM and Remote Sensing

水系PU树脂和纺织产品开发

Aqueous Polyurethane Resins and Its Development in Textiles

珠江水系鱼类寄生虫：I.鲀的五种复殖吸虫

Parasitic worms from the Pearl River system fishes : i.five species of DIGENETIC TREMATODES from fugu spp

基于DEM的水系提取及水系网多级分解

The Extraction of Drainage System Based on DEM and the Decomposition of Multilevel Drainage Networks

其中水流方向的决定是基于格网DEM的水系自动提取的重要环节之一。

And the flow direction determination is one of the most important parts in the automatic ditch extraction .

Horton码反映水系网中河流子树的深度。

Horton code reflects the grade relation of river network .

本文以MicrosoftvisualBasic6.0为开发平台，结合地理信息系统（GIS）开发了基于GIS的圩区水系规划计算机辅助设计系统。

With the development platform of Microsoft Visual Basic 6.0 , A Computer-aided Design System for the Planning of Polder Region River Net based on Geographical Information System is developed in this thesis .

水系河网的Horton编码与图形综合研究

Research on Horton Code and Graphic Generalization of Catchment

根据DEM数据，确定了汤旺河流域的地表水流方向、集水区的划分及水系网络空间分布特征。

On the base of the DEM , the spatial distribution of flow directions , watershed boundaries and stream networks of Tangwanghe Catchment were studied .

LD构造带主要受古长兴岛水系的控制，发育半深湖-深湖沉积体系。

The growing of LD structural zone was mainly controlled by the ancient river system of Changxing island , developed to bathyal-deep sea sedimentary system .

双组分不同粒径YSZ-Al2O3水系稳定性料浆的制备与表征

Preparation and Characterization of Two-component YSZ-Al_2O_3 Aqueous Stabilized Suspensions with Different Particle Sizes

研究了基于DEM的流域特征信息的提取，包括水系的提取、子流域的划分、流域边界线的提取等；

The digital analysis of catchments properties from DEM is studied , such as the extraction of river network , boundary of subwatershed and distributed catchments characters .

总结了根据流域的数字高程模型（DEM）自动提取河网水系的集水面积方法。

The widely used method for extracting the watershed channel network from digital elevation model ( DEM ), i.e. the water catchment area method , is presented .

利用DEM可以提取地形因子，如坡度、坡向、高程信息、地表粗糙度、曲面面积、体积、水系、河网密度等。

Terrain factors such as slope , aspect , elevation , surface roughness , and so on , can be extracted by utilizing DEM based on GIS .

对该区西港河、东港河河水和水系沉积物中重金属元素分布特征的研究结果表明，该区矿山开采和冶炼活动形成的重金属污染元素主要为Cd、As、Zn；

This paper studies the heavy metal distribution of creek water and its sediments in this area . The result shows that the Cd , As , Zn is the most distinct pollution elements ;

Au在水系沉积物中以化学作用形式搬运迁移，一般距离为800～1600m。

Au migrates in stream sediment in form of chemical attack , the removing distance is usually 800 ~ 1 600 m.

黄土高原流域水系的HORTON级比数和分形特性湘江流域水文地理

Horton 's Order Ratios of Water Course Network of Drainage Basin and their Fractal Characters in the Loess Plateau

研究了DJS水系在酿造酱油制曲中产酶及其活力的影响。

In this experiment , the effect of DJS on enzyme yield and enzyme activities during soy sauce koji-making was studied .

利用遥感方法自动获得DEM提取水系的修正数据，不仅提高了修正数据获取的自动化程度，而且便于实时更新；

The RS methods which are used to gain the revising data of extracting water system by DEM can improve the level of automatically getting the revising data and update the DEM revising data in time .

东海、南黄海DMS和DMSP的空间分布明显受到长江冲淡水和贫营养的黑潮水系及其分支的影响。

The spatial distributions of DMS and DMSP in the ECS and the SYS are obviously influenced by the Yangtze River effluent and the oligotrophic Kuroshio waters .

从基岩→残坡积层→草皮层→水系沉积物，金矿化主要指示元素Au、As、Sb的平均含量在逐步降低，其他元素也多如此。

The contents of the gold indicator elements Au , As and Sb tend to decrease in order of bedrock → residual and slope sediments → meadow surface soil → stream sediments , and things are similar for other elements .

本文阐述了乳胶涂料消泡剂&CSE、CRA的研制、性能测试并经实际应用表明其在消泡效果和水系分散性方面与进口同类产品相当。

Preparation and test of the antifoamers & CSE and CRA for emulsion coatings was discussed . It was indicated that the antifoamers were equivalent to the imported ones in antifoaming effect and dispersity in water system .

GPt＿1～7系列标准物质由土壤、水系沉积物、富镁超基性岩、富铁超基性岩、含铜镍贫铂矿石及铬铁矿等不同类型7个样品组成。

A set of seven geochemical reference materials for platinum group elements ( PGE ) and Au including soils , sediments , Mg_rich peridotite , Fe_rich peridotite , poor platinum ores containing copper and nickel , and chromite , were prepared .