查询词典 water pollution

Water-deficient is a key factor to restrict agricultural production and economic development in the region. In order to improving the infrastructure conditions of agricultural production as soon as possible, inducting farmers to develop non-pollution vegetable and economic crops, helping farmers to increase income in planting and breeding, and facilitating sustainable development of agricultural production, according to Year 2002 Project Guide Rural of Mini-type Water Commonweal Establishment Construction and some relative requirements, local government has defined to construct rainwater-collection model project in Tianhui brae after analyzing and reasoning.

水资源缺乏是制约该区域农业生产和经济发展的关键因素，为改善丘陵灌区农业生产条件，引导农户发展无公害蔬菜和经济作物，在种植和养殖业上帮助农户增收，促进农业生产的可持续发展，根据2002 年度农村小型水利公益设施建设项目指南和相关要求，经过认真研究，科学分析论证，确定在天回山丘陵区实施集雨节水灌溉示范项目。

Metal pollution in drinking water sources is becoming a more and more serious problem that can not be neglected due to the mass discharge of industry sewage and electronic product castoff into the water in recent years.

近年来各种工业废水、电子废弃物的大量排放，已经使饮用水源水中的金属污染成为一个不可忽视的问题。

In some cases, some metals in sediments could be released into the overlying water, causing second pollution, and become a"chemical bomb"hiding under lake water.

另外，在一定条件下，沉积物中部分金属元素也可再次向上覆水体释放，造成"二次污染"问题，严重威胁到湖泊／水库的水质安全，成为埋藏在湖泊深处的一颗"定时炸弹"。

Today's earth faces many a problem of environm en t and ecosystem:"greenhouse effect",chemical pollution,acid rain,sand dust dev il,went short of water wealth,water and soil bereave,soil fallen into desert,spe cies eradication,forest demolish,etc.

今天的地球面临着许许多多的环境和生态问题，"温室效应"、化学品污染、酸雨、沙尘暴、淡水资源匮泛、水土流失、土地沙漠化、物种灭绝、森林破坏等等。

Are China's urban water supply and the mainstream of traditional disinfection methods, and more and more studies have shown that, in the face of heavier pollution, excessive use of chlorination methods will instead have a negative impact on water quality and safety.

是中国的城市供水和传统的消毒方法的主流，越来越多的研究表明，在重污染面前，过度使用氯化方法将改为对水质安全的负面影响。

Therefore corresponding pesticide management practices and water and soil losses prevention and cure measures were good for the water quality controlling. Fertilizer utilization, logging and steeper topographty of woodland which vulnerable to corrasion, excessive feed for fishery, stock raising waste, living pollution and the layout of industry caused the change in nitrate concentration.

硝酸盐氮的变化主要来源于农业上化肥的使用、林业采伐引起水土流失的增加和林地本身坡度较大易于引起水土流失、渔业饵料的过度投放、养殖业畜禽废弃物的排放、生活污染的排放和工业生产布局（区别与工业产值密度的相关性，工业产值则更倾向于工业布局对水质的影响）。

The dispersion medium used in the invention is water, but not organic solvent; the product obtained in synthesis reaction is innoxious water-based liquid, and has no secondary pollution after use. The invention has the advantages of simple production technology and convenient use.

本发明的消除有害挥发性物质的制剂使用的分散介质为水而不是有机溶剂，通过合成反应得到的产物为无毒水性液体，使用后不会产生二次污染，此外，本发明产品的生产工艺简单，而且使用方便。

But waterfront became victim for construction of city and exploitation of oil during oil city was developed.So some problems occurred such as pollution of water,desertification of lake shoal,decreased water area and destroyed ecosystem of water area.

然而在油城发展的历程中，滨水资源成为了城市建设和石油资源开发的牺牲品，导致水体污染、湖滩荒漠化、水体面积减少、水域生态系统破坏等现象发生。

The technology of water washing can remove all above-mentioned harmful impurities except of P〓O〓 in crystal lattice. However, the feasibility of water washing technology may rely on the ability in investment as the initially required investment size is big. Also, this technology may cause a secondary pollution as the process generates large amount of waste water. Organic matters can be removed by a floating technology. Lime may be used as a neutralizing agent which transforms watersoluble P〓O〓, F〓 into salts of low solubility. Grinding can improve the crystal morphology and the gradings of PG. A combined technology of neutralization with grinding may have the advantages of both.

水洗可除去除共晶P〓O〓以外的所有杂质，但存在一次性投资大、工艺复杂、污水排放造成二次污染等问题；浮选可除去磷石膏中的有机物；石灰中和使有害态的可溶磷、氟转化为惰性的难溶盐；适当的球磨可有效改善磷石膏的颗粒形貌与级配；筛分可除去有害杂质含量特别高的部分，提高磷石膏品质；球磨与石灰中和结合的预处理工艺，既消除了主要有害杂质的影响，又改善了磷石膏颗粒结构与级配。

Water and soil loss is not only the most primary and direct pollution sources, but also the carrier of other pollution.

水土流失是最主要、最直接的污染源，同时也是其它污染的载体。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。