灰霾天的空气污染物浓度高于非灰霾天。
The concentration of pollutants of haze was higher than non-haze days.
空气品质标准：指室外空气中空气污染物浓度限值。
Air quality standards means concentration limits for air pollutants in outdoor air.
同时，贴地大气层结温度递减率与空气污染物浓度呈显著反相关。
At the same time, the correlation coefficient between temperature vertical decrease rate of low layer atmosphere and air pollutant concentration is negative.
周二，盘踞莫斯科达一周之久的烟雾稍有消散，但空气污染物浓度依然很高。
The smog that has engulfed Moscow for a week eased a bit Tuesday, but the concentration of pollutants remained high.
基于信息可视化方法中面向象素技术的基本思想，采用圆环段技术对空气污染物浓度数据实现了可视化。
Based on the thinking of the Pixel-Oriented visualization technique, the circle segments technique was used to implement the visualization of the air pollutant data.
在借鉴大气总量控制箱模式的理论基础上，探讨了室内空气污染物浓度的新的计算方法，并通过此模式对影响因素作了分析和分情况解释。
Based on the box model used in atmospheric Science, Calculation of indoor air pollution concentration had been developed and it's effect factors were discussed as well.
即便空气污染物的浓度相对偏低，它也与一系列的健康副效应相关。
Even relatively low concentrations of air pollutants have been related to a range of adverse health effects.
现行的五年计划，其包括的数字目标没有几个，设想这期间最差的空气污染物的浓度减少10％，能源效率增长20％。
The current five-year plan, which contains few other numerical targets, envisages a 10% reduction in concentrations of the worst air pollutants and a 20% increase in energy efficiency over the period.
它们为下述选定的空气污染物的浓度限值提出了修订：可吸入颗粒物(PM)、臭氧(o3)、二氧化氮(NO2)和二氧化硫(SO2)，适用于世卫组织所有区域。
They recommend revised limits for the concentration of selected air pollutants: particulate matter (PM), ozone (O3), nitrogen dioxide (NO2) and sulfur dioxide (SO2), applicable across all WHO regions.
20世纪90年代，空气污染时最严重时（如图所示），臭氧这种最常见的污染物的平均浓度大约是安全浓度的一半。
The average concentration of ozone, one of the most common pollutants, is about half its level in the early 1990s, when the air was at its dirtiest (see chart).
20世纪90年代，空气污染时最严重时(如图所示)，臭氧这种最常见的污染物的平均浓度大约是安全浓度的一半。
The average concentration of ozone, one of the most common pollutants, is about half its level in the early 1990s, when the air was at its dirtiest (see chart).in.
除了指导值之外，空气质量准则也为有关室外空气污染的每项空气污染物提出了过渡目标，以便促进逐渐从高浓度向低浓度过渡。
In addition to guideline values, the AQGs give interim targets related to outdoor air pollution, for each air pollutant, aimed at promoting a gradual shift from high to lower concentrations.
通过降低燃烧矿物燃料期间释放的几种最主要的空气污染物的浓度，能够大量减少对空气污染的暴露。
Significant reduction of exposure to air pollution can be achieved through lowering the concentrations of several of the most common air pollutants emitted during the combustion of fossil fuels.
大气颗粒物是一种重要的空气污染物，详细分析了大气颗粒物浓度的检测原理、检测方法。
The airborne particulates are an important type of air pollutants. This paper analyzes the principles and methods of the monitoring of the ambient airborne particulate concentration.
空气污染预报属于正问题，而从污染物浓度来求解扩散系数则属于反问题。
Air pollution prediction is a direct problem, and deriving diffusion coefficients from the concentration of pollutants is an inverse problem.
在仅从浓度来决定严重空气污染物方面，我们必须十分小心。
We must be careful about depending solely on concentration values in determining the severity air pollutants.
严重的空气污染通常是因为一个城市或其他地区在空气流动停滞期间排放了高浓度污染物。
Serious air pollution usually results over a city or other area that is emitting high levels of pollutants during a period of air stagnation.
严重的空气污染通常是因为一个城市或其他地区在空气流动停滞期间排放了高浓度污染物。
Serious air pollution usually results over a city or other area that is emitting high levels of pollutants during a period of air stagnation.
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