Based on the analyses of the main types of non-point source pollution in rural watershed and the impacts of non-point source pollution on river ecosystem, a management mode for non-point source pollution on the scale of watershed was proposed,and emphasis was placed on the best management practices(BMPs) supported technology.
在分析乡村流域非点源污染主要类型以及非点源污染对乡村河流生态系统影响的基础上,提出建立流域层面上的农村非点源污染管理模式,着重分析了最佳管理措施BMPs相关技术并建立了在流域层面上管理乡村河流的工作步骤,该工作流程有助于建立乡村非点源污染防治规划的框架体系。
Based on the characteristic of seepage in layered RCCD, the disciplinarian of seepage in layered RCCD affecting on seepage field of dam is studied in this article with lamella unit simulating layer of RCCD.
从碾压混凝土坝的渗透特性出发 ,采用薄层单元模拟层面 ,探讨了碾压混凝土坝层面渗流对坝体渗流场的影响规律 。
The paper presents pretreatment technology and equipment, such as ferrous separator and oil－ water separator in degreasing process, and heat exchange system, slag－ off system and surface flow layer in parkerizing process.
简要介绍在涂装前处理脱脂工序中使用的铁分离器、油水分离器，化成工序的热交换系统、排渣系统、表面流层等工艺及设备。
Study on negotiation mechanisms at basin level of water pollution control in Taihu Lake Basin
太湖流域水污染治理的流域层面协商机制
Study on the authorized methodology of irrigation water norms at river basin level;
流域层面农业灌溉定额编制方法研究——以松辽流域为例
formation fluid sampler panel
地层流体取样器面板
a current below the surface of a fluid.
流体的上流层以下或表面以下的流动。
Using Roughness Surface on Control of Supersonic Laminar Flow Boundary Layer
用表面粗糙度控制超声速层流边界层
Depletion Layer- A region on a wafer that contains an electrical field that sweeps out charge carriers.
耗尽层-晶圆片上的电场区域，此区域排除载流子。
First Regional Observing Study of the Troposphere
首次对流层区域观测研究
The Shallow Ground Water Numerical Simulation of the Haihe Basin Plan Area;
海河流域平原区浅层地下水数值模拟
Research on Bureaucratic Coordinating Mechanism in Basin Environmental Protection
论流域水环境治理的科层型协调机制
The lightning is the current from the cloud layer to the cloud layer or from the cloud layer to ground.
闪电是从云层到云层或从云层到地面的电流。
Turbulent BL Structure: Wake, Wall layers. Inner, Outer Variables. Effects of Roughness.
紊流边界层结构：尾流，壁面层，内、变数。粗糙度效应。
Analysis and Use of Moving Equation of Laminar Flow and Attached Laminar;
层流附面层内流体运动方程的推导及应用
The Database System for Surface Wave Tomography in China and Its Adjacent Land and Sea Areas;
中国及相邻陆域海域面波层析成像数据库
Micro-leveled Key Research Areas for PPP Financing;
PPP模式微观层面的关键研究领域
The Characteristics of Turbulence Fluxes in the Near Surface Layer over the Wheat Field in Huaihe River Basin
淮河流域农田近地层湍流通量特征研究
Preliminary Discussion on the Logic Concerning the Aspects of Norm and Fact in Legal Field--Syntactic Correspondence;
试论法律领域内规范层面和事实层面的逻辑—句法对应性
Pollution prevention work started full swing in key river valleys and regions.
重点流域和区域污染防治工作全面展开。
Cooperation for the development of the Mekong River valley is about to unfold.
湄公河流域开发合作即将全面展开。