水质污染

But if small area and building inside of gearing and management of the design, construction of the water supply system maintenance isn't appropriate, may result in fluid matter drive pollute of phenomenon, cause the disease spread, endanger the people's health and the life directly.

但若小区和建筑内的给水系统设计、施工安装和管理维护不当，就可能造成水质被污染的现象，导致疾病传播，直接危害人民的健康和生命。

This natural geographic location and specific climatic conditions, so that here the air, soil and water pollution were not any.

这天然的地理位置和特定的气候条件，使这里的空气、土壤和水质均无任何污染。

Impervious surface is a character of urban areas. The ratio of imperviousness and total area becomes a significant urban ecological index in the research of urban hydrology, water pollution, urban vegetation mapping and so on.

不透水面是城市地区的典型特征，它与城市总用地面积的比值--不透水率作为一个重要的城市生态指数常出现于城市水文、水质、面源污染以及城市植被制图等研究中。

This article mainly explains the safety principium of infectant factors in waste water vented by the paper making industry in China. Through the study on the experiment in open country and indoors with soil pole, indicating that it is a complicated process of biochemical degradation to form a layer, which has a biochemical capability to process COD degradation in polluted water from paper making industry.

综述我国造纸业污水中的污染因子危及地下水水质安全的机理，通过对野外试验和室内土柱试验的过程及结果进行分析研究，表明在包气带中形成一个以生物化学作用为主的生化层在造纸污水中COD降解是一个复杂的生物化学降解过程；生化层在天然状态下形成，由生物氧化带和生物氧化还原带形成，其形成过程具有明显的阶段性；只有当生物氧化还原带形成后，生化层才发育成熟，具备对COD降解的生化能力；生化层空间分布，仅局限在污水池、渠底部包气带中有垂向渗流的部分。

People can know diversified conditions of the water quality, water quantity and degree of pollution in different sections of the rivers more meticulous, vivid and intuitionist when 3D visual environment simulation is applied to the simulation of water environment.

把三维视景技术应用于水环境仿真中，能使人更加细致、逼真、直观的了解不同河段的水质、水量、污染程度等各种情况。

The water quality control of seriously polluted river was tested by Ipomoea aquatica on soilless floating beds.

研究采用浮床无土栽培种植水蕹菜以控制重污染河道水体水质。

These results suggested that using Dugesia japonica to monitor used-battery pollution of water would be suitable.

用涡虫监测废电池对水质的污染具有一定的应用价值。

Better still if well cooked. Attention especially to "lamellibranch" molluscs such as mussels or clams, particularly exposed to pollution and microbes, especially if they came from stagnant or dirty waters.

特别要注意「鳃角类的动物」，像是蛤蜊及珠蚌这样的软体类，实际上是很容易接受污染及细菌的，尤其是如果它们是来自於停止流动且脏兮兮的水质里。

Although the seabed of the Ninepin Group is polluted by sandy mud which causes ill water and low visibility, marine life is especially abundant here, a lot of rich soft corals are found, and is thus my most favourite spot for underwater photography.

虽然果洲群岛的海床受到淤泥污染、水质较为污浊、能见度也较低，但那里蕴藏的海洋生物则非常特别，更有丰富的软珊瑚，所以是我最爱到的潜摄点。

Finally it was found that the present of Oligochaetes not only brought better characteristics of the sludge such as good settleabilily, but also minished the membrane fouling greatly, and did not affect the effluent quality. And most important of all, in the case of almost no sludge production discharged, MLSS could be kept nearly 4000mg/L in more than 40 days when Oligochaete was present, which meant that there was no sludge production in the process.

同时，试验还发现大量蠕虫的存在，对出水水质的影响不大，但能够改善污泥特性，减缓动态膜污染，污泥浓度能自平衡于4000mg/L左右；并在近40天内，在没有排泥的情况下，无污泥量的增加，即实现了减量剩余污泥排放。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。