查询词典 water pollution

This paper mainly reviews the ecological functions of Ceratophyllum demersum and Hydrilla verticillata Royle, they have played the important role of in controlling water pollution at tributaries in Three Gorges Reservoir Region.

通过分析三峡库区次级河流的生态环境问题，重点分析了水体出现富营养化的几个重要方面，即营养盐和有机物污染、重金属污染和藻类的爆发等。

Furthermore,biological assessment of water pollution and eutrophic condiction was conducted by using the method of " indicator organism","biotic index"andR.

报道了东平湖轮虫群落结构特征及数量的季节变动，并依据调查结果，采用&指示生物法&、&生物指数法&和R。

The Lake area in Jianghan Plain is one of the most ecotypically fragile areas in Yangtse Valley, and here there are four main ecological problems: frequent flood, silt and sand that make the lake become a swamp, water pollution and eutrophication, and the schistosome.

江汉平原湖区是长江流域生态环境最脆弱的地区之一，洪涝灾害严重、泥沙淤积和沼泽化现象普遍、湖泊水体污染与富营养化问题突出、血吸虫未得到根治等是该区目前存在的主要生态环境问题。

Due to slope cable bears barely alternative load longtime in nature environment, it is easy to corrosion and wreck. Seriously, the bridge is possibility to collapse in strictness air empoison, water pollution, seashore and ocean surroundings. Therefore, to study cable's corrosion widely and to inhibit corrosion process are very important for increase endurance and safety of bridge construction.

由于斜拉索长期承受交变载荷并暴露于自然环境中，特别是大气污染严重地区、水污染严重地区、海滨及海洋环境，极易发生腐蚀破坏，严重者还会因坍塌而造成生命及财产的巨大损失，因此，全面研究桥梁拉索的腐蚀，阻断腐蚀的成因，对提高桥梁结构的耐久性与安全性具有重要意义。

The nitrogen and pesticide in the topsoil with soil erosion go into river, lake and reservoirs and so on. So that the soil erosion reduced, the nocuous matter loss can be controlled as well, the sediment silt and water pollution in rivers, lakes and reservoirs can be decreased.

土壤中氮和农药等有害物质的流失是以水土流失为载体，进入江河、湖泊、水库等水源地，加大了这些水源地的污染，所以减轻了土壤水土流失量，就能够很好控制农耕地有害物质的流失，减轻江河、湖泊、水库等水源地的泥沙淤积和水质污染。

The Physalia is a self-sufficient ecosystem that generates all the power it needs from the sun and works to reduce water pollution through bio-filtration.

僧帽是一个自给自足的生态系统，借助自身的&光合作用&获得所需的能源，并通过生物过滤减少水污染。

The Physalia is a self-sufficient ecosystem that generates all the power it needs from the sun and works to reduce water pollution through bio-filtration .

这个巨型浮囊内部有一套自给自足的生态系统，其利用太阳产生自身所需的能源，并通过生物过滤来减少水源污染。

The conclusion is that only applying distinct detection and prevention strategies to different inducing factors,the early warning and precontrol measures for public security incident on water pollution in Three Gorges Reservoir can be effective.

只有对不同的诱因施行不同的监测和控制策略，才能对库区水体污染公共安全事件开展有效预警、预控。

Resultingly, TiO_2 can be used to clean air and water pollution. It is promising in agricultural field.

利用这一特性，TiO_2可以用来净化空气和水体污染，在农业领域中显示出了广阔的应用前景。

Guangzhou City Environmental Protection Bureau Chief Engineer Salicaceae told reporters that a high content of organic milk, the COD (chemical oxygen demand, detect water pollution indicators) amounted to 3,000 mg / l, while the untreated wastewater COD paper only 1000 mg / l; addition, as the issue of dumping milk containing melamine,"It's a question of the food chain as far as possible the post-diluted melamine content is low, almost not detected, but based on people's health is a highly responsible attitude In order to avoid the problem of milk contaminated fish the river."

广州市环保局总工程师杨柳告诉记者，牛奶中有机物含量很高，其COD(化学需氧量，检测水体污染程度的指标)达3000毫克/升，而未经处理的造纸废水的COD只有1000毫克/升；此外，由于倾倒的问题牛奶中含有三聚氰胺，&这有一个食物链的问题，尽量被稀释后的三聚氰胺含量很低，几乎检测不到，但本着对人民健康高度负责的态度，要避免问题牛奶污染河中的鱼类。&

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷