1.
ambient air quality standard
GB3095-1996环境空气质量标准
2.
The Elementary Exploration on the Standard of Air Quality in Spun Yarn Workshops of Cotton Mills;
棉纺织厂细纱车间空气质量标准初探
3.
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。
4.
That provides for the implementation, maintenance, and enforcement of the national air quality standards.
它为贯彻、维护、并执行国家的空气质量标准作准备。
5.
Air quality standard and calculation method of designed ventilation rate in underground vehicle passages
地下机动车道空气质量标准和设计通风量计算方法
6.
Each region in the country which complies with the NAAQSs is put into one of three classes.
全国符合《全国环境空气质量标准》的各个地区，都被划分为三类。
7.
In establishing national ambient air quality standards, the EPA Administrator is not permitted to consider the feasibility of attaining them.
在建立《国家环境空气质量标准》时，环境保护局的局长不允许考虑达到标准的可行性。
8.
Due to increasing awareness of the adverse consequences of air pollution, numerous countries of the temperate latitudes have promulgated air quality standards.
由于对大气污染的恶化情况日益关注，地处温带的许多国家颁布了空气质量标准。
9.
As we saw in Chapter 3, air in Class I areas must be kept cleaner than would otherwise be required by the national air quality standards.
像我们在第三章所看到的那样，一级地区的空气标准比国家空气质量标准所要求的还要高出许多。
10.
It should be remembered that the fundamental purpose of the offset policy is to allow industrial growth despite stringent air quality standards.
应该记得，补偿政策的基本目的是允许工业增长，尽管实施着严厉的空气质量标准。
11.
d emission standard
空气质量和排放标准
12.
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。
13.
Standard for quality inspection and evaluation of petroleum construction engineering Electrical engineering(overhead power lines engineering)
石油建设工程质量检验评定标准电气工程（架空电力线路工程）
14.
Haikou has attained Grade I while 14 of them attained Grade III.
其中海口达到一级标准。 14个城市空气质量为三级。
15.
From 2002 to 2004, the quality of ambient air in urban area of Qinzhou city reach national secondary standard.
2002年至2004年，钦州市区环境空气质量达国家二级标准。
16.
Standard methods for radon measurement in environmental air
GB/T14582-1993环境空气中氡的标准测量方法
17.
PREPARATION OF MICRO-OXYGEN IN NITROGEN CALIBRATION GASES BY GRAVIMETRIC METHOD
重量法制备氮中微量氧气体标准物质
18.
In 2001, the annual average of NO2 concentration in the air of 341 cities attained the Grade II national standards for air quality.
2001年，341个城市空气中二氧化氮浓度年均值均达到国家环境空气质量二级标准。