污染物

Objective To explore the pathologic changes in trachea of rats exposed to air pollutants.

目的探讨大气污染物对大鼠气管的病理学改变。

Sulfur dioxide (SO2), a common pollutant of urban air, can severely produce toxic symptoms in both humans and animals. It can cause respiratory tract diseases such as tracheitis, asthma, emphysema, and has close relations with lung cancer.

二氧化硫(Sulfur dioxide，SO_2)是一种常见的对人体健康危害较大的大气污染物，可引起气管炎、哮喘、肺气肿等多种呼吸道疾病，甚至与肺癌的发生有关。

Sulfur dioxide , a common pollutant of urban air, can severely produce toxic symptoms in both humans and animals. It can cause respiratory tract diseases such as tracheitis, asthma, emphysema, and has close relations with lung cancer.

二氧化硫(Sulfur dioxide，SO〓)是一种常见的对人体健康危害较大的大气污染物，可引起气管炎、哮喘、肺气肿等多种呼吸道疾病，甚至与肺癌的发生有关。

Pollution characteristics and transport and transformation rules of heavy metal pollutants were analyzed systemically at first.

本文首先系统分析了重金属污染物在水体中的污染特性以及迁移转化规律。

As the development of economic, emission of pollutant and environmental protection become more and more important, these are also closely related to sediment transport problem.

而且随着经济的发展，污染物排放处置、滩涂促淤围垦和海洋环境保护等方面的问题日益突出，这些问题都与泥沙输运密切相关。

Tree Sparrow is a feasible species for monitoring the environment.

北京不同污染源的地区所采集的麻雀体内的污染物含量均比较高；各个元素之间具有明显的相关性；麻雀内部组织与羽毛中所富集的重金属具有明显的相关性，表明以麻雀作为监测城市环境污染状况是可行的。

The photocatalysis activity of prepared particles was studied by the use of testing substance trichloroethylene.

以三氯乙烯气体为模拟污染物，考察了粒子的气相光催化性能。

It was selected the major components of the odor from aquatic feed factory,and hydrogen sulfide,ammonia and trimethylamine were taken as the target pollutants.

以水产饲料恶臭废气中的主要组分H2S、NH3和三甲胺为研究对象，采用生物填料塔进行脱臭的试验研究，考察运行生物填料塔的主要影响因素及污染物净化处理效果。

As regards environmental protection, WMO's Global Atmospheric Watch monitors the chemical composition of the atmosphere including greenhouse gases, the ozone layer and ultra-violet radiation, as well as long-range transport of pollutants, aerosols, reactive gases and radioactive isotopes.

在环境保护方面，WMO的全球大气监视网对包括温室气体在内的大气化学成分，臭氧层和紫外辐射以及污染物、气溶胶、再活化气体和辐射同位素的长期距离传输进行监测。

The results show that the indoor air is unpolluted and the main contamination is particulates with diameter of 10 μm or less, total volatile organic compounds and ozone; the pollution mostly comes from personnel, merchandise and outdoor air; the unacceptability ratio of the indoor air quality is 22.64%, so the indoor air is unacceptable; indoor persons have caught sick building syndrome; long time and low concentratio...

结果表明，商场室内处于未污染状况，主要污染物是可吸入颗粒物、总挥发性有机化合物和臭氧；主要污染来源于顾客、商品和室外空气；商场内人员对室内空气的不可接受率为22·64%，室内空气属于不可接受；室内人员已有病态建筑综合症发生；长时间低浓度污染，是室内污染的重要特征；室内人员对商场的温度、相对湿度和室内光照度、视觉环境等满意程度很高。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。