contamination concentration

Variations of air pollutant concentrations and their evaluation in Zhangjiajie National Forest Park, China.;

张家界国家森林公园大气污染物浓度变化及其评价

This paper analyses the daily data of pollutant concentration and meteorological data of Taiyuan in 2003,ex-pounds the relationship among space and time changes of pollutant concentration,pollutant concentration and meteorological conditions,refers reference for lightening and preventing air pollution.

对2003年太原市污染物浓度逐日数据和气象资料进行了分析,阐述了污染物浓度的时空变化和污染物浓度与气象条件的关系,为减轻和防止大气污染提供了参考。

By applying the gray Verhuls prediction model,the change of air pollutant concentration in Benxi City is predicted with satisfy results.

运用灰色Verhuls预测模型及本溪地区 1 991～ 2 0 0 0年污染物浓度的统计资料 ,对本溪市大气污染物浓度的变化情况做出预测 ,取得了满意的结果 。

Influence of groundwater discharge on decay process of contamination concentration in river flow;

地下水补给对河流污染物浓度衰减过程的影响

Experimental simulation on spatial optimum estimation method of contamination concentration in groundwater;

地下水污染物浓度空间最优估值方法的实验模拟

The contamination concentration process is studied.

将描述湖库中污染物混合—沉积过程的确定性模型随机化,建立了污染物混合—沉降的随机微分方程模型,研究了污染物浓度的随机动态特性,给出了一种依据污染物浓度的随机动态和沉积系数,在功能性和生态影响兼顾的前提下管理湖库的方法。

The influence of roof shape on the flow field and traffic pollutant concentration field in street canyons was investigated by two-dimensional numerical model,which was based on Reynolds-averaged Navier-Stokes equations,Spalart-Allmaras turbulence model and pollutant transport equations.

采用Spalart-Allmaras湍流模型,通过求解二维连续性方程,Navier-Stokes方程及污染物输运方程,模拟了具有不同屋顶形状的街道峡谷的流场及交通污染物浓度场。

Atmospheric flow field and pollutant concentration field were simulated by using the modified k-ε turbulent model on the condition of different spaces between buildings.

采用修正的k-ε湍流模型对不同建筑间距情况下的大气流场、污染物浓度场进行模拟研究。

Effect of Ventilation on Indoor Polutant Concentration Distribution;

通风对建筑物室内污染物浓度分布的影响

Appliance of curve fit in the forecasting concentration of environmental air pollutants

曲线拟合在环境空气污染物浓度预测中的应用

Investigations on the Relationships of Indoor and Outdoor Air Pollutant Concentrations during the Evolution Process;

室内外空气污染物浓度演化关系的研究

Research on the Relationships of the Effect on Contaminations and Health Caused by Climate Change;

气候变化对污染物浓度和健康影响的关系研究

Concentration Distribution of the Indoor Pollutants under the Conditions of Mechanical Ventilation;

机械通风条件下室内污染物浓度的分布

The Study of Concentration and Transport Characteristics of Atmospheric Pollutants over Offshore China Sea;

中国近海大气污染物浓度特征及陆源输送研究

Studies on Comprehensive Evaluation Methods about Spatial Variation of Seepage Contamination Concentration;

渗流污染物浓度空间变异性综合评价方法研究

Analysis of Regularity of Concentration Change Caused by Main Environmental Air Pollutants in Shangqiu City;

商丘市环境空气主要污染物浓度变化规律试析

Research on the Pollutant Concentration Model Based on Gray System Theory

基于灰色系统理论的污染物浓度模型研究

Effect of the Cooled Ceiling on Pollutant Concentrations in Rooms with Cooled Ceiling and Displacement Ventilation Combined Systems

冷板辐射场对室内污染物浓度变化的影响

Vertical Distribution of the Main Air Pollutants in the Atmosphere in Tianjin

天津城市主要大气污染物浓度垂直分布

Vertical distribution of air pollutants in the atmosphere in Tianjin

天津城市大气污染物浓度垂直分布特征

Analysis of Distribution Rule of Sulfur Dioxide in Shijiazhuang City

石家庄市二氧化硫污染物浓度分布规律研究

Research on the Impact of Civil Building Air Tightness to Indoor Pollutant Concentrations

民用建筑气密性对室内污染物浓度影响的研究

Pollutant concentration variation and analysis of causes in Eight Major Outlet of Pearl Rive

珠江八大口门污染物浓度变化及成因分析

Comparisons of measurements of contaminant concentration in landfill bottom soils with theoretical solutions

填埋场底土污染物浓度实测值和理论解的比较

Impacts of Heat Source temperature on Indoor Concentration Distribution with Natural Ventilation

热源温度对热压自然通风房间内污染物浓度分布的影响

Variation of Pollutants Concentration along Combined Biological Aerated Filter

复合式曝气生物滤池中污染物浓度沿程变化规律