它是城市主要的空气污染源。
此外，接触到室内空气污染源后的反应在人与人之间存在极大差异。
People also react very differently to exposure to indoor air pollutants.
在西方一些国家，“二手香”早就被视为空气污染源之一。
In western countries, "second-hand fragrance" has been deemed a source of air pollution for a long time.
清洁空气法令要求主要空气污染源需获得这种许可证，以防止污染物排放量的严重增加。
The Clean air Act requires major sources of air pollution to obtain such permits before making changes that would result in a significant emissions increase of any pollutant.
接触了某些室内空气污染源后，也可能迅速出现某种疾病的症状，这类疾病包括哮喘、过敏、肺炎以及发烧。
Symptoms of some diseases, including asthma, hypersensitivity, pneumonitis, and fever, may also show up soon after exposure to some indoor air pollutants.
工厂占地2万多平方米，拥有万亩植物原料基地，半径20多公里内无化工企业和空气污染源。
The factory covers an area of 20,000 square meters, and 1650 acres of which is a plant material base.
农业活动也有可能成为讨厌的空气污染源，即会增加当地的空气污染程度，也会产生难闻的气味。
Agricultural practices can also be a significant source of nuisance, contributing both to local levels of air pollution and causing dour problems.
如果一个人离开家时症状减轻或消失了，而一回到家症状又出现了，那么人们就应当确定可能引起症状的室内空气污染源。
If the symptoms fade or go away when a person is away from the home and return when the person returns, an effort should be made to identify indoor air sources that may be possible causes.
空气污染源排放清单编制工作的基本程序包括建立坐标系、建立空气污染源数据库、编制排放清单和排放报告；
The basic procedure of emissions inventory compilation includes building reference frame, establishing an emissions database and working out emissions inventory and report.
催化裂化（FCC）装置再生器排放的烟气是炼厂最大的空气污染源，包括颗粒物、硫氧化物、氮氧化物和一氧化碳等。
The smoke emitting from FCC regenerator is the largest air pollution source in refining plant, which includes particulates, oxysulfides, oxynitrides, carbon monoxide, and so on.
室内空气污染对健康的其他影响可能在接触污染源若干年之后开始显现，或者经过一段长时间的反复接触后才开始显现。
Other health effects may show up either years after exposure has occurred or only after long or repeated periods of exposure.
让学校远离工厂和其它污染源，普及家用清洁炉灶，从而减少儿童暴露在空气污染中的机会；
Minimize children's exposure to air pollution by keeping schools away from factories and other pollution sources and using cleaner cookstoves in homes.
作为空气污染的主要来源之一，易挥发有机物(VOCS)不仅是一次污染源而且还可能造成光化学烟雾等二次污染。
Volatile Organic Compounds (VOCS), as one of the major sources of air contaminations, can not only cause direct pollution, but also lead to secondary pollution, such as photochemistry smog.
空气污染通常是与主要的固定污染源，但排放的最大来源是移动来源主要是汽车。
Air pollution is often identified with major stationary sources, but the greatest source of emissions is mobile sources, mainly automobiles.
本文概括了室内空气污染的主要污染源及主要污染物。
This article summarizes the major indoor air pollution sources and major pollutants.
即使只是远离主要污染源—尾气多几米远，空气污染程度都会大大下降。同时，不要走在吸烟人的后面。
Pollution levels can fall a considerable amount just by moving a few meters away from the main pollution source-exhaust fumes. Also don't walk behind smokers.
从控制污染源和消除室内空气污染两方面进行了净化试验。
Carries out a purification experiment for controlling pollutant source and removing indoor air pollutants.
除了空气污染和水污染之外，工业文明危害环境的第三大污染源就是噪声。
Noise is the third resource of pollution which do harm to the industry civilization besides the pollution of air and water.
利用数值模拟方法，研究了单个建筑物外存在点污染源时室外空气污染对室内空气质量的影响。
The impact of outdoor air pollution on the indoor air quality by the way of numerical simulation was studied.
介绍了室内空气污染的现状、特点及其危害，指出了室内空气污染的主要污染源和污染物。
In this paper, the status, characteristics and harm of indoor air pollution are described. The primary contaminants and sources of indoor air pollution are pointed out also.
介绍了室内空气污染的现状、特点及其危害，指出了室内空气污染的主要污染源和污染物。
In this paper, the status, characteristics and harm of indoor air pollution are described. The primary contaminants and sources of indoor air pollution are pointed out also.
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