这种变化特征主要与控制小区地形、土地利用、地表径流和水系特征有关。
These change characteristics were related mainly to the topography, land use, surface run-off and drainage characteristics of the controlled areas.
流域地形是决定水系生成的一个关键性因素，是数字流域和分布式水文模型研究的主要内容。
The watershed topography is a key factor for extraction of the drainage, and it is also a very important topic in the study of digital watershed and the distributed hydrological models.
根据地形和水利工程现状，通过水动力学的分析和计算，将旧水库改建为给水系统的混凝沉淀设施。
After water dynamics analysing and calculating, an old water reservior is rebuilt into a precipitating equipment combining with the terrain and the present condition of water project.
前言：介绍了DR AST IC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质i的影响和含水层的导水系数。
The paper introduces seven factor of DRASTIC model: Depth of water table, Net recharge, Aquifer media, Soil media, Topography, Impact of Vadose Zone and Hydraulic Conductivity.
研究提取流域的基本地形特征如坡度和坡向，提取流域水系，划分了小流域。
The basic terrain characters of drainage area such as slope, aspect, and channel system, the demarcation of the small watershed was investigated.
本文首先概述了新疆农三师新建58团农田供水项目区的基本情况，并分析了地下水系统和盐碱地形成的原因；
The paper summarizes the basic situation of the project area for supplying water to farm in 58 group of Nongsanshi, Xinjiang. And analyze the groundwater system and causes of saline formation.
有关地形、水系、原生和次生矿物分布有助于圈定矿体。
This, with all available information on topography, primary and secondary mineral dispersal helps to locate the mineralization .
有关地形、水系、原生和次生矿物分布有助于圈定矿体。
This, with all available information on topography, primary and secondary mineral dispersal helps to...
有关地形、水系、原生和次生矿物分布有助于圈定矿体。
This, with all available information on topography, primary and secondary mineral dispersal helps to...
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