空气污染指数

基于BP网络的空气污染指数预报研究

Forecast of air pollution index based on BP neural network

目前在北京最受欢迎的一款iPad应用是中国空气污染指数。

One of the most popular iPad apps in Beijing at present is China Air Pollution Index .

VB可视化集成环境下空气污染指数计算与分析系统

Calculation and Analysis System of Air Pollution Indicators under VB Visual Environment

探讨了以VB可视化集成环境为平台，在Windows操作系统下开发空气污染指数计算与分析系统的基本模型和方法。

The basic models and methods to develop calculation and analysis system of Air pollution indicators under VB Visual and Windows environment , was discussed .

空气污染指数（API）是美国环保署于70年代研究开发的一种用于表示每日空气质量状况，并易于为大众理解的报告方法。

Air pollution index ( API ) was developed by USEPA in 1970s which was used for the daily air quality report and easy for the public to understand .

空气污染指数（API）年平均值近三年间均有下降趋势，并针对空气污染提出了相应整改措施。

The annual average of the air pollution index ( API ) showed a decrease tendency in recent 3 years , and put forward the air pollution preventing and curing countermeasures .

对南宁市2003年的空气污染指数（API）与天气因素（天气类型、气象因子）的相关性进行了详细分析。结果表明，高压脊在冬春季对API影响较大；

The relation of API ( Atmosphere pollution index ) and weather factors ( weather type , weather genes ) in 2003 of Nanning city was analyzed , the results show that in winter and spring the high pressure ridge affect API greatly ;

本文采用API空气污染指数法对阜新市1996-2000年大气污染状况进行了评价，分析了污染现状、污染变化的趋势和原因，指出了首要污染物和次要污染物。

This essay evaluates the present situation of air pollution in Fuxin city in 1996-2000 using air pollution index , analyzing the present situation , varying tendency and the reasons of pollution , and pointing out the primary pollutants and the secondary pollutants .

室内空气污染指数与患病危险性呈显著线性相关，它的PAR在男性为13%，女性为17%。

There was also a significant increase in lung cancer risk associated with an overall index of indoor air pollution due to coal burning emission , the PAR was 13 % for men and 17 % for women .

本研究利用中尺度气象模式，欧拉模式和气流轨迹模式，模拟研究区域气象场及大气污染物输送场，结合2008年重点城市空气污染指数（API）资料对模拟结果进行验证分析。

In this study , mesoscale meteorological model , Eulerian model and air trajectory model simulation of the regional meteorological field and air pollutant transport market , combined with the key cities in 2008 Air Pollution Index ( API ) information to verify the results of the simulation analysis .

新标准将目前我国采用的空气污染指数升级为空气质量指数，并依照国际惯例，将臭氧、一氧化碳、PM2.5都纳入评价体系。

Along with the new standards , the country 's existing Air Pollution Index will also be upgraded into the Air Quality Index . This will follow international practices to include ozone and carbon monoxide pollution levels as well as PM2.5 .

湖南省城市空气污染指数演变的季节气候特征

Seasonal Climate Characteristics of City Air Pollution Index in Hunan Province

广州市2002~2003年空气污染指数分析

Air Pollution Index Analysis of 2002 and 2003 in Guangzhou

我国与国际空气污染指数系统的比较

A comparison of the mainland Chinese and international Air Pollution Index system

红灯塔也拉在从狗吠声的空气污染指数总体评价。

Red Beacon also pulls in the aggregate rating from Yelp 's API .

基于神经网络中小城市空气污染指数预估器的设计

Forecast of Air Pollution Index in One City Based on the Artificial Neural Net

介绍了香港空气污染指数预报的方法和所取得的良好社会效果。

This paper briefly introduced air quality forecasting with pollutants ' index in Hong Kong .

以前只有美国使馆发布北京的空气污染指数。

The air-quality readings for Beijing used to be released only by the US embassy .

空气污染指数模式的改进

Improvement of Air Pollution Parameter Mode

重庆市多年空气污染指数分析及大气污染控制对策临沂市大气污染控制状况与对策

Analysis of API in Chongqing and Countermeasures against Air Pollution Air Pollution in Linyi City and Its Control Measures

厦门市空气污染指数预测方法研究&时间序列分析与神经网络的比较（英文）

Study on Air Pollution Index Forecasting in Xiamen City & Comparison Between Time Series Analysis and Neural Network ;

在空气污染指数与监测技术方面的进展比环境健康其它领域的进展更为显著。

Progress in developing indices and monitoring techniques for air pollution were further advanced than in most other areas of environmental health .

刚刚过去的这个周日的下午，美国大使馆发布的北京空气污染指数介于很不健康和危险之间。

On Sunday afternoon , the air pollution index in Beijing published by the US embassy gave a reading between very unhealthy and hazardous .

2001年全年空气污染指数Ⅱ级和好于Ⅱ级的天数达到50%以上。

The numbers of the days with the air pollution index attaining Grade II and better than Grade II is over 50 % in 2001 .

上星期，中国北方空气污染指数严重超标，一些指数超过国际安全水平十倍以上。

Severe pollution has hit much of northern China for the past week , with some readings well over 10 times the internationally accepted safety limit .

今年大气污染治理目标继续提高，市区空气污染指数二级和好于二级天数要达到55%。

This year 's target for air pollution control is to raise the rate of days with air pollution index equaling or bettering grade II to 55 percent .

刚刚过去的这个周日的下午，美国大使馆发布的北京空气污染指数介于“很不健康”和“危险”之间。

On Sunday afternoon , the air pollution index in Beijing published by the US embassy gave a reading between " very unhealthy " and " hazardous . "

不同季节大气细粒子与空气污染指数之间的相关关系显著，春季较其它三季的相关系数小一些；

The correlation of fine particles and API has an obvious correlation in different seasons , though the correlation of fine particles and API in spring is the worst .

本地报纸无新闻，每天公布的空气污染指数低得让人产生错觉，以为生活在另一个星球上。

The local newspaper publishes no news and the everyday publishing of atmospheric pollution index is low enough to produce an illusion that you are living on another planet .

空气污染指数和级别概念已被很多国家或地区采用，但在具体级别限值和等级划分上因各国国家环境标准差异而有所不同。

The concepts of API and air quality levels have been widely accepted by many countries and regions , but there are some differences because of different national air quality standards .