The quantity of chemical pollutants has increased exponentially.
化学污染物的数量已经急剧上升。
Chemical pollutants released into water or spread through the air are often invisible to the human eye.
释放到水体中或空气传播的化学污染物通常是不可见的。
How to effectively control and manage chemical pollutants has become an important part of the environmental management.
如何有效地控制和治理各种化学污染物是环境综合治理的重要内容。
In a word, marine sediments has become the main reservoir of persistent and poison chemical pollutants in marine environment.
海洋沉积物已经成为海洋水体环境中持久性的、有毒的化学污染物的主要存贮地。
Thompson's rigorous quality control procedures test all raw materials to ensure no chemical pollutants such as PCBs, mercury and lead.
汤普森的严格的质量控制程序测试所有原材料，以确保没有化学污染物，如多氯联苯，汞和铅。
The characters of chemical pollutants' physical and chemical fate in the media of atmosphere include forcing, dissipation, and non-linearity.
大气介质中化学污染物的物理、化学行为具有外源强迫和耗散性等非线性动力学特征。
Several decades ago, Americans dumped raw sewage into rivers and many industrial plants are now still dumping chemical pollutants into lakes, rivers and oceans.
几十年前，美国人把经处理的污物、污水倾倒入江河，许多工厂如今仍在把化学污染物倒入湖泊、江河和海洋。
Some people can become sensitized to biological pollutants after repeated exposures, and it appears that some people can become sensitized to chemical pollutants as well.
在这一点上人与人之间的差异极大。有些人多次接触生物污染物后会产生反应，而有些人则对化学污染物过敏。
Residents in Yancheng, Jiangsu, queued up for bottled water at supermarkets Friday as local authorities cut water supplies for almost 7 hours after detecting chemical pollutants.
20日，江苏省盐城市因自来水受化学污染，市区大范围停水长达近7个小时，很多市民在超市排队购买瓶装水，以备暂时之用。
Environmental chemical pollutants affect human beings' health enormously. Nowadays studies on their toxicol actions have focused on organelle and molecular level of organism.
环境化学污染物严重威胁人类健康，目前对其毒性作用机制研究已逐步深入到细胞器和分子水平。
The natural degradation speed of the pollution of chemical pollutants in the soil is very slow under a natural condition, so a long-time pollution source to underground water is formed.
土壤中的化学污染物在自然条件下污染自然降解速度非常缓慢，形成对地下水的长期污染源。
One of the most disturbing aspects of the changes in Earth is the rate at which chemical pollutants produced by human activity are destroying the protective layer of ozone in Earth's upper atmosphere.
地球上的变化最令人烦扰的方面之一，是人类活动所产生的化学污染正在迅速破坏地球上部大气圈臭氧保护层。
The result is a chemical nest that entraps the waste, and pollutants such as heavy metals may be chemically bound in insoluble complexes.
这样就形成一个化学网套住废弃物，像重金属等的污染物可以被限制于不能溶解的化合物当中。
Pollution source means a physical or chemical operating unit that emits air pollutants.
指排放空气污染物之物理或化学操作单元。
The fine particles (magnetic seeds) have the function of adsorbing and flocculating pollutants in water, the range of effects can be widened by several physical and chemical methods.
综述了微细粒磁性颗粒(磁种)在水中对许多污染物具有吸附和絮凝作用，用一些物理和化学方法可使其作用范围扩大。
The current scope of major pollutants includes sulfur dioxide and chemical oxygen demand, a gauge of water pollution.
现在主要污染物的范围包括二氧化硫和化学需氧量，为一个衡量水污染程度的指标。
The harbor chemical wastewater is very difficult to treat because it contains organic pollutants, and the quality and quantity of the wastewater can vary from time to time.
港口化学品污水由于含有一些难于处理的有机污染物质，而且水质和水量又具有多变性和随机性，处理难度较大。
Usually quantum chemical calculation is an important way to get structural parameters of specific molecules in study of the structure-activity relationship of organic pollutants.
在有机污染物的结构活性关系研究中，量子化学计算是获得分子结构参数的重要途径。
Treatment of non biodegradable toxic organic pollutants by green chemical process is a very active field in recent years.
近年来利用绿色化学过程来处理难生物降解有机物是一个非常活跃的研究课题。
Emphasis is on equilibrium calculations as a tool for understanding the variables that govern the chemical composition of aquatic systems and the fate of inorganic pollutants.
重点是均衡计算作为理解决定水系统化学成份和无机污染物去向的变量之工具。
The pollutants often occur with high levels of other toxins such as lead, zinc, and ground-level ozone, a component of smog formed by chemical reactions between car exhausts and sunlight.
这些污染物常常与其他有害物质，如铅、锌和地面臭氧一起出现。地面臭氧是汽车排气与太阳光一起发生光化学反应形成的一种烟雾成分。
Conclusion the air purification device can effectively eliminate the typical chemical and biological pollutants in tunnels, and the field-test showed that the air quality is guaranteed.
结论研制的空气净化装置可对坑道内典型的化学污染物及大肠杆菌代表的微生物进行有效地去除或杀灭，现场试用结果表明可有效保证坑道空气质量。
The research advancement and characteristics of various chemical technologies of treating toxic organic pollutants are summarized. The photochemical oxidative method is detailedly discussed.
简介了有毒有机污染废水的各种化学法处理技术的特点及研究进展概况，其中对光化学氧化法作了较详细的评述。
Chemical industrial wastewater is characterized by seriously polluted by organic pollutants, low biodegradability and high salt concentration.
化工行业废水具有有机污染程度高、可生化性差、含盐量高等特点。
After the oil was spilled into the sea, large amount of oil was removed by physical and chemical methods. However, residual oil pollutants will drift to the bank with the action of wave and tide.
溢油事故后采取的物理、化学应急措施能有效消除大片油污，而残余的石油污染物会在波浪和海流的作用下向岸边漂移。
Then, all the quantum chemical descriptors including hardness index, softness index, and electronegativity are made to be correlated with the parameters of anesthetic toxicity of organic pollutants.
同时得到相应的量子化学参数，如：分子最高占有轨道能、分子最低空轨道能、分子偶极矩和分子体积等，并将这些理化参数与有机污染物的麻醉毒性参数相关联。
This paper discusses the interaction of organic pollutants and heavy metals in soils, which includes adsorption, chemical reaction and microbial processes.
本文主要讨论了有机污染物和重金属在土壤中的吸附过程、化学作用过程以及生物学过程等的交互作用方式及其机理。
Water chemists study the chemical composition of seawater. They also analyze the types and quantities of pollutants entering ocean waters.
海洋化学家们研究海水的化学成分，他们还分析流入大海的污染物的种类和数量。
Mass transfer modeling is of importance to many research fields such as transport and evolution of pollutants, chemical dissolution of rock, water quality of...
水-岩土体系质量传输模拟在岩土中污染物的迁移转化、岩土化学淋滤、地下水水质的形成与演化及热水成矿等众多研究领域具有重要意义。
Mass transfer modeling is of importance to many research fields such as transport and evolution of pollutants, chemical dissolution of rock, water quality of...
水-岩土体系质量传输模拟在岩土中污染物的迁移转化、岩土化学淋滤、地下水水质的形成与演化及热水成矿等众多研究领域具有重要意义。
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