查询词典 water pollution

As for the severity of the surface water pollution, water ecological balance was break and aquatic community had altered, tolerance species such as Chironomid larvae and Limnodrilus increased a lot in the water.

在我国，由于地表水污染严重，原有的水生生态平衡遭到破坏，摇蚊幼虫、水蚯蚓等耐污种类数量猛增，导致以这类水体作为供水水源时，出现水生动物污染城市供水系统的问题。

Non-point Source Pollution is defined as a kind of water pollution, caused by deliquescent or solid pollutant from runoff through indefinite locations.

非点源污染是指溶解的或固体的污染物从非特定地点通过径流过程而汇入受纳水体引起的水体污染。

The results reveal that domestic sewage and rural diffused pollution are the main causes of water pollution.

分析结果表明：点源污染、农村面源污染是中小城镇水体污染的主要原因。

Headwaters resource protection, water pollution control and sustainable utilization of city drinking water resources have become an important target of city water management.

保护水源、治理水污染，实现饮用水资源的可持续利用成为城市水管理的重要目标。

The H value was calculated to be 0.246 using Shannon-Wiener diversity index method.By aquatic reservoir evaluation criteria, combined with the type and density of zooplankton,it could be clearly determined that the water quality was seriously polluted and eutrophic.4.Comprehensive assessment of water quality:Affected by the influxion of sewage, slow flow velocity,high contents of nitrogen and phosphorus,the quantities of both zooplankton and phytoplankton at 1st point were relatively high,with the appearance of various indicator species of water pollution.

计算Shannon-Wiener多样性指数法得出H值为0.246，通过水库水生生物评价标准，结合浮游动物种类和密度，可以很清楚判定水质为污染严重，已经呈富营养化。4水质综合评价：排污口1号采样点受生活污水的大量排入的影响，且水流流速缓慢，水中氮磷含量高，因而浮游动物和浮游藻类数量都很高，而且出现很多污染生物指示种，综合分析该水层水质属污染严重的富营养化。

Most environment pollutions appear mainly in karst region,especially in the form of water pollution; environment pollution has a much worse destruction to the earth,vegetation and physiognomy,especially in the quarry areas. It even results in geologic hazard; for the mine geologic hazard,the background of physiognomy is the potential factor,while the irrational exploitation is the magistral factor.

环境污染多出现在岩溶地区，以水污染为主；环境资源的破坏以露采区最为严重，对土地资源、植被、地貌景观有较大的影响，甚至对地质灾害的发生都有深刻影响；矿山地质灾害的发生，地质地貌背景是诱发的潜在因素，不合理的开采方法是诱发的主导因素，降雨和水文条件是激发灾难发生的直接原因。

Soil phosphorus as agricultural non-point source pollution is one of the main factors which lead to water pollution.

土壤磷素的农业非点源污染是导致水体污染的最主要的原因之一。

Both the intensifying of water pollution and the increasing of water consume will lead lack of water coming pitilessly .

水污染的加剧，用水量的递增，都将无情地导致水荒的临近。

Thin and flat sand mining, beach slow and clear water, tidal flat and the difference is small, which lasted for nearly a hundred years; low level of water pollution, water quality, clean, plenty of sunshine is to carry out swimming, sunbathing, sand bath, beach activities and marine tourism, marine the best place to swim.

海沙细而平矿，滩缓而水清，潮平而差小，延绵近百里；海水污染程度低，水质清洁，阳光充足，是进行海水浴、日光浴、沙浴、沙滩活动与海上观光、海上游动的最佳场所。

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。

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。