1.
Air quality--Vocabulary
GB/T6919-1986空气质量词汇
2.
d emission standard
空气质量和排放标准
3.
multiparameter air quality analyzer
多参数空气质量分析仪
4.
ambient air quality standard
GB3095-1996环境空气质量标准
5.
The air quality in the urban areas picked up gradually.
城市空气质量逐步提高。
6.
air quality-determination of performance characterristics of measurement methods
空气质量-质量测定法的评价
7.
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
8.
impact on the quality of the water and the air
对水质和空气质量的影响
9.
air quality-general aspects(units of measurement)
空气质量-常用部分（测量单位）
10.
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。
11.
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。
12.
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
13.
Air quality--Determination of nitrogen oxides
GB/T13906-1992空气质量氮氧化物的测定
14.
ECE Statistical Classification of Ambient Air Quality
欧洲经委会环境空气质量统计分类法
15.
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。
16.
presentatiom of ambient air quality data in alphanumerical form
空气质量数据的文字表示格式
17.
Compressed air for general use-Quality classes
GB/T13277-1991一般用压缩空气质量等级
18.
stratified sampling method for assessment of ambient air quality
环境空气质量评定用分层取样法