Abstract : study is made of recovery of organic reagents during the preparation of ultrafine powder by metal alcoxides hydrolysis . the phase diagrams of isopropanol - benzene system and isopropanol - benzene - water system have been plotted , based on which , isopropanol and benzene can be recovered and recirculated by distillation - rectification process . the recovery and reused rate of alcohol and benzene are above 75 % . so both the environmental pollution and cost of ultrfine powder are reduced 文摘:对醇盐水解法制备超细粉末过程中有机试剂的回收进行了研究，绘制了异丙醇-苯的二元相图和异丙醇-苯-水的三元相图，在此基础上采用蒸馏-精馏的方法对制备体系中的异丙醇和苯进行回收，将有机试剂循环使用，使醇和苯的回收利用率达75 %以上，因而减少了环境污染，并降低了粉末成本。
While inquiring into the technological countermeasures , we mainly aim at the excess of pathogenic bacteria , the excess of medical remains and the problems leading to pollution of ecological environment , etc . in order to resolve safe problems of feed , we must start animal feed engineering , control the emergence of the infectious diseases , control the environmental pollution and use livestock medicine reasonably . we come up with scientifically valuable viewpoints and opinions in the aspects implementing the technology of " green feeding management " and " green pack , label and business " and guarantee control measures of safety in production of broiler products 针对肉鸡产品出口中病原菌超标、药残超标、对生态环境污染等问题，从启动饲料工程解决饲料安全问题、控制环境污染、合理使用兽药、控制传染病的发生、实施绿色饲养管理技术、绿色包装、标识和营销、肉鸡产品安全生产控制方案等方面提出了具有科学价值和实际意义的观点和见解。
However the extensive use of scientific technology has brought serious environmental issues to the mankind in the same time , such as the waste of resources , the exhaustion of energy , the loss of water and erosion of soil , the greenhouse effect , the environmental pollution of the earth and so on , which made people in the world have to face the living crisis that they had never met 与此同时，科学技术的广泛利用也为人类社会带来了严重的环境问题，如资源浪费、能源枯竭、水土流失、温室效应、地球环境污染等，使人类面临前所未有的生存危机。如何协调人与环境、环境保护和经济发展的关系成为全球关注的热点。
On the other hand , this paper details the study on effects of environmental pollution on the algae growth besides essential nutrition , especially those of dye wastewater in sunan area on the process of eutrophication , from which we expect to know what the environmental pollution factors overlapping other factors interfere with the competitive relationships of different species and have a certain effects on the succession of water ecosystem species 另外，论文中的实验也涉及到除对藻类生长所必需营养物外的环境污染因子的影响。尤其是苏南地区的染料废水等对富营养化过程的影响，以期了解叠加在其他因素上的环境污染因子对生物种群间的竞争关系的干预，及对水生生态系统种群演替的影响和程度。
Regarding with the environmental pollution risk during the railway transport of dangerous goods , the authors analyze the defects of the environmental protection of railway dangerous goods transport and the characteristics of such environmental pollution accidents , and give their suggestions on preventing environmental pollution , including administrating according to the laws and legislating a whole series of related rules and regulations , scientifically planning the allocation of railway stations that could handle dangerous goods transport , improving transportation facilities and conditions , strengthening the training of related staffs , etc 摘要针对铁路危险货物运输中存在的环境污染风险，分析了我国铁路危险货物运输中存在的不足和事故环境污染的特点，提出了依法行政整章建制，合理规划办理站布局、改善运输设备及条件，加强人员培训等相应的防范措施和建议。
In china , industrialisation and urbanisation have led to increasing emissions of pollutants and the environmental pollution is posing public health threat , with 300 million rural residents drinking unsafe water and one - fifth of major cities failing to meet the countrys minimum standards for drinking water 在中国，工业化和城市化已导致污染物的排放增加，而环境污染亦威胁到公众健康。目前，三亿多农民的饮用水并不安全，而五分之一主要城市的饮用水水质达不到国家最低标准。
True alleviated the modern people , the life rhythm is quick . the spiritual pressure is big , in addition the movement insufficiency , the environmental pollution and so on causes " the asian healthy condition " , lets the customer enjoy to aristocrat s feeling , has unusually escapes the valley , fills the charm the english aristocrat makings 真正的缓解了现代人，生活节奏快精神压力大，加上运动不足环境污染等引起的“亚健康状态” ，让顾客享受到贵族般的感觉，拥有超凡脱俗充满魅力的英格兰贵族气质。
