查询词典 pollution

To solve the problems of nitrate and heavy mental pollution in vegetable products, some research works were conducted by our research group, including the controlling of the nitrate content in hydroponic lettuce by regulating nutrient formula, in addition, studies on the effects of Cd on the growth and quality of lotus root and investigations of vegetable field pollution were also conducted.

本方向根据我国蔬菜生产中硝酸盐和重金属污染比较突出的问题，重点开展了水培生菜的硝酸盐控制技术、重金属镉对莲藕生长发育、蔬菜菜田污染成因与防控等方面的研究，建立了多种蔬菜的标准化安全生产操作规程，为蔬菜安全生产提供了有力的技术支撑。

It was speculated that the water pollution caused by mariculture itself might be an important cause of the diseases in large yellow croaker; therefore, some solutions are suggested in this paper for reducing the negative effects of self-pollution in cage culture.

通过分析，推测引起舟山市网箱养殖大黄鱼疾病多发的主要原因是网箱养殖本身造成的水体污染，从而提出了舟山市网箱养殖大黄鱼疾病预防的主要措施。

Firstly, it introduces the composing and nature of natural water body, discusses the reasons, major types of water pollution, transfer, transformation and self-purification mechanism of various pollutants and features of water resources, water pollution situation in China .

一是介绍了天然水体的组成和性质，讨论了水污染形成的原因、主要类型、水体中各种污染物质迁移、转化与自净的机制及我国的水资源特点、水污染的状况。

A study on heavy metal pollution of water,bottom mud of river, and agricultural land soil was conducted in lower reaches of the smeltery. It indicated that heavy metal pollution in lower reaches of smeltery changed regularly and a mathematical pattern was suggested.

摘要研究冶炼厂下游河道水质、河底污泥、农田土壤的重金属污染状况，明确了冶炼厂下游环境的重金属影响的变化规律，提出了冶炼厂下游土壤重金属污染的数学模型。

And a variety of heavy metal exist in the soil that the dependency analysis that heavy metal pollutes makes clear smeltery is circumjacent the compound pollution type of different level, different combination, farm ecosystem is put in the trend of compound pollution.

而重金属污染的相关性分析表明冶炼厂周边的土壤中存在多种重金属不同程度、不同组合的复合污染类型，农田生态系统存在复合污染的趋向。

ABSTRACT :Noise pollution from the sound source, the main route of transmission and the receiver three basic aspects of composition, therefore the control of noise pollution must be part of these three studies as a system.

摘 要：噪声污染由声源，传播途径和受主三个基本环节组成，因此噪声污染的控制必须把这三个环节作为一个系统进行研究。

Indicators for monitoring should cover physical aspects such as intrusion on views, skylines or open spaces, air pollution, sound pollution, as well as economic, social and cultural dimensions.

监测指标应包括物质方面，如对视野、天际线和室外空间的侵占、空气污染、噪声以及经济、社会或文化方面。

Article 36 To build expressways, urban overhead road and light-tract lines that traverse areas where there are concentrated noise-sensitive structures and that might produce environmental noise pollution, sound barriers shall be erected or other effective measures shall be taken to control environmental noise pollution.

第三十六条建设经过已有的噪声敏感建筑物集中区域的高速公路和城市高架、轻轨道路，有可能造成环境噪声污染的，应当设置声屏障或者采取其他有效的控制环境噪声污染的措施。

The fifth chapter: regionally environmental program. Through argument of environmental reasonability of general program, set down the control goals of waste gas, waste water discharging, sound pollution and solid waste, and established preventing program of pollution and ecological environment..

第五章：区域环境规划，通过对区域总体发展规划的环境合理性论证，确定了经济技术开发区大气污染、废水排放、噪声污染、固体废物等环境污染控制目标，并制定了污染防治规划和生态环境规划等。

With the aggravation of organic pollution of the drinking water source and the improvement of the water-quality standards, the conventional treatment craft of drinking water used in most of water plants in China can't remove the organic pollutant effectively to satisfy people's demand in the water quality. Consequently, permanganate preoxidation technic and mineral materials are combined with coagulation to removing the organic pollutant of drinking water further, so that to solve the increasing contradiction between the aggravation of organic pollution of the drinking water source and the striction of the water-quality standards.

随着饮用水源有机污染的日益加重以及饮用水水质标准的不断提高，我国大多数水厂所采用的传统处理工艺不能有效地去除有机污染物，从而对饮用水水质产生一定的影响，因此，引入高锰酸钾预氧化技术和矿物吸附材料，从而强化去除饮用水中的有机污染物，以解决水源有机污染日益严重与饮用水水质标准日趋严格之间的矛盾。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。