quality of air

Analysis of air quality situation and motional changes of Shihezi city;

石河子市空气质量状况及动态变化分析

Forecasting model of environment air quality based on B-P neural network;

基于B-P神经网络的环境空气质量预测模型

Technical experience of ambient atmosphere monitoring and methods of atmosphere quality forecast in China;

我国环境空气质量监测历程和预报方法

The paper analyzes changing trend of atmosphere quality monitoring datum from 2001 to 2005 based on different month,different year and different pollution gene.

分析了博乐市2001—2005年空气质量监测数据在不同月份、不同年份、不同污染因子的变化趋势,并结合当地能源结构、地理位置、气候特征、城市环境综合发展水平,指出影响博乐市空气质量的主要因素,为防治或减轻博乐地区的空气污染提供了科学依据。

Modeling and application for atmospheric quality evaluation based on grey clustering modified method;

空气质量评价灰色聚类修正模型的建立与应用

The correlation function of the quality of air was created.

根据空气污染指数范围及相应的空气质量类别建立了空气质量的关联函数,根据实际观测数据通过计算得到了2004年中国具有代表性的十大城市空气质量关联函数的区间数。

Research of analysis system on urban ambient air quality daily report;

重点城市空气质量日报分析和图形表征技术研究

Analysis on the ambient air quality relation to meteorological condition in Lhasa;

拉萨市环境空气质量与气象特征分析

Air quality--Vocabulary

GB/T6919-1986空气质量词汇

d emission standard

空气质量和排放标准

multiparameter air quality analyzer

多参数空气质量分析仪

ambient air quality standard

GB3095-1996环境空气质量标准

The air quality in the urban areas picked up gradually.

城市空气质量逐步提高。

air quality-determination of performance characterristics of measurement methods

空气质量-质量测定法的评价

Effects of meteorological conditions on air quality in Jinjiang,Fujian province

气象条件对晋江城市空气质量的影响

impact on the quality of the water and the air

对水质和空气质量的影响

air quality-general aspects(units of measurement)

空气质量-常用部分（测量单位）

Urban Air Quality in Key Environmental Protection Cities In the 47 key environmental protection cities, 19 of them have attained the Grade II standards for urban air quality.

环保重点城市空气质量47个环保重点城市中，19个城市环境空气质量达到空气质量二级标准。

Clean Air Act Amendment (1987) established a national air-quality standard for ozone.

1987年洁净空气法修正案建立了空气的国家空气质量标准。

Characters and Causes Analysis of Air Quality Changes in Urumqi City Based on Daily Report of Air Quality

基于空气质量日报的乌鲁木齐市空气质量变化特征及成因分析

Air quality--Determination of nitrogen oxides

GB/T13906-1992空气质量氮氧化物的测定

ECE Statistical Classification of Ambient Air Quality

欧洲经委会环境空气质量统计分类法

Compared with the previous year, the urban air quality remains unchanged.

与上年相比，城市空气质量基本持平。

presentatiom of ambient air quality data in alphanumerical form

空气质量数据的文字表示格式

Compressed air for general use-Quality classes

GB/T13277-1991一般用压缩空气质量等级

stratified sampling method for assessment of ambient air quality

环境空气质量评定用分层取样法