The sets of diffusion equations are presented for reactive pollutant from a time -varied point source and secondary pollutant formed by the transformation.
建立了一个点源排出的活性污染物以及其在大气中化学转化形成的次生物扩散方程。
This paper concisely introduced the basic principal of ultrasonic degradation of chemical pollutants in water,and reviewed advancement of research from two aspects i.
本文简要介绍超声降解水体中化学污染物的基本原理，从所研究物系和影响因素两方面较为详细地综述了近年来有关这方面的研究状况，介绍超声降解的两个发展方向，并指出该技术走向成熟所面临的几个问题。
Changes of typical chemical pollutants in the environment and their ecological effects have been approved as a major project of the eighth five-year plan by National Natural Science Foundation of China and will be carried out from 1992 to 1995.
国家自然科学基金“八·五”重大项目——“典型化学污染物在环境中的变化及生态效应”已被批准立项,并将于1992—1995年内付诸实施。
The effects of these chemical pollutants on the ocean ecology and their harms to humanbeing are discussed.
本文系统阐述了海洋中的主要污染物如重金属无机盐类、有机氯和有机磷类、石油烃类和放射性物质的来源与含量 ,介绍了这些化学污染物对海洋生态环境已造成和可能造成的危害 ,论述了由于海洋生态环境遭到破坏对人类的危害。
Surveillance and Evaluation of Indoor Chemical Pollutants of a Completed Subway
某地铁站竣工时室内化学性污染物监测与评价
chemical residue and contaminant
化学物质残滓及污染物
chemicals poisoning the lake;
污染湖泊的化学物质；
Pollution is an undesirable change in the physical, chemical and biological characteristics of environment.
描述:污染是环境在物理、学、物特性上发生了变化。
Prediction of physical chemical property and genotoxicity of organic contaminants
有机污染物理化性质与毒理学性质的预测
and computers and their peripherals release polluting chemicals, too.
电脑及其周边设备也释放出污染性的化学物质。
Study on Monitoring Electrophile Chemical Pollutant Based on Transgenic Cell;
构建转基因细胞检测亲电性化学污染物的研究
ELECTROCHEMICAL DISINFECTION OF BIO-ORIGINATED WASTEWATER
生物性污染废水的电化学消毒试验研究
biogeochemical cycle of pollutants
污染物的生物地球化学循环
Biogeochemistry of Organochlorine Pollutants in Hongfeng Reservoir;
红枫湖有机氯污染物的生物地球化学
A Combined Purification Process of Biological and Chemical Methods for Polluted Gas
污染气体的生物与化学组合净化工艺
Langmuir-Hinshelwood Model of Photocatalytic Oxidation Kinetics of Volatile Organic Pollutants
挥发性有机污染物光催化氧化动力学中的L-H模型
contaminated with infecting organisms.
被传染性微生物污染的。
Research on Chemical Speciation Analysis of Pollutants in Sewage Sludge;
城市污泥中污染物的化学形态分析研究
not spreading pollution or contamination; especially radioactive contamination.
不会散布污染或者污染物；特别是放射性污染物。
a river contaminated by chemicals
受到化学物质污染的河流
Contaminated instruments and floor surfaces should be chemically disinfected.
污染的器材和地面要用化学药物消毒。
The soil bas been poisoned with chemical waste from the factory.
工厂里排出的化学废物污染了土壤。