查询词典 polluted

In an experimental enclosure system, floating plant Eichhornia crassipes was planted in summer and submersed plant Elodea nutalli was planted in winter to reestablish water ecosystem, and to investigate the effects of the hydrophytes on the removal of nitrogen and phosphorus from polluted water body and the improvement of water transparency.

在实验围隔系统中，夏季利用凤眼莲、冬季利用耐寒型沉水植物伊乐藻等恢复水生生态系统，研究水生植物对水体氮、磷营养盐、透明度等理化性质的影响。

Research on purification of polluted water by different submerged macrophytes,Cabamba carolimana Gray,Elodea Canadensis and Ceratophyllum demersum L.

对鱼草、伊乐藻、金鱼藻三种沉水植物在不同条件下净化受污水体进行了研究。

The results showed that Jussiaea stipulacea Ohwi and Eichhornia crassipes had higher values of V and K than Elodea nuttallii, illuminated that the two floating macrophytes were proper for pre-treatment of the seriously polluted water.

结果表明：漂浮植物黄花水龙和凤眼莲具有较大的吸收速率V和K值，因此，它们更适合作为先锋植物对污染严重的富营养化水体进行前期的修复治理，待水体水质提高到一定的程度时，再利用去污能力低的沉水植物进行对修复水体水质的维持和提高，并在此基础上可逐步建立一个较为稳定的、生物多样性的生态系统。

China's air and water are among the most polluted on earth and it is the leading emitter of greenhouse gases.

中国的 空气和水都属于地球上最污染，它是全球领先温室气体排放。

The main causes of the pollution identified result from the irregation of using the polluted water from industries and the endogenic pollution of F and Hg elements is mainly caused by...

造成污染的主要原因是工业三废中的污水长期被利用灌溉，同时查明活动断裂是F、Hg等元素的内生污染源。

To prevent marine environment pollution resulting from offshore oil exploitation, besides the formulation by offshore oilfields of the Crash Program to Combat Oil Spills During Offshore Oil Exploration and Exploitation, oil-polluted water treatment equipment has been installed on all drilling platforms, engine-room oil-water separators have also been installed aboard all drilling ships, and oil barriers, chemical de-oiling agents and spill recovery ships provided in all China's offshore oilfields.

为了防止海上石油开发对海洋环境的污染，采油平台全部配备了含油污水处理装置，钻井船舶全部配备了机舱油水分离装置，各油田都配备了围油栏、化学消油剂，以及溢油回收船。海上油田还制定了《海洋石油勘探开发溢油应急计划》。

Polluted water causes many kinds of diseases such as diarrhea, enteritis, etc.

污染的水引起多种疾病，诸如腹泻，肠炎等。

In order to find out completely the soil-wheat contaiminated by heavy metals in Tianjin sewage farm, we collect samples on the dry land and examinate contents of heavy metals in soil-wheat system. Firstly, the anthor evaluates that soil irrigated by sewage that has been contaminated slightly, the main polluting factors are Cd and Zn, and then the anthor evaluates soil according to different regions, soil types and irrigating water. Secondly, the anthor analyzes content and enrichment ability of heavy metals in different part of wheat, evaluates wheat is contaiminated by Cd widespreadly, only few samples polluted by Zn.Finally the anthor put up correlative analysis about heavy metal contents in the soil-wheat system, as well as plant enrichment coefficient and some physico-chemical properties of soil, and establishes a prognostic model about heavy metal content among wheat spike, soil, soil types, PH, organic matter and salinity with the quantifying theory.The prognostic accuracy of primarily contaminative factors is the best with compound correlative coefficient examining, the model can be founded.With improvement of living level, people need cleaner food.

为全面了解天津市污灌区农产品生产地土壤和旱地作物小麦的重金属污染状况，我们于2004～2005年对全市污灌区的土壤和小麦进行了采样，在对该区土壤—小麦系统中六种重金属元素(Cd、Cu、Pb、Zn、Cr和Ni)的含量进行检测的基础上，本文首先分析评价了污灌区农田土壤的环境质量总体已达到了轻度污染水平，主要的污染因子是Cd和Zn，同时对污灌区农田土壤分区县、土壤类型和不同灌水类型进行了评价；然后分析了重金属在小麦不同部位的含量与富集能力，评价了污灌区旱地作物小麦普遍遭受了Cd的污染，只有个别样点遭受了Zn的污染；最后对土壤—小麦系统重金属含量间以及植物富集系数与土壤部分理化性质间进行了相关分析，由于土壤类型是定性变量，本论文以数量化理论建立了小麦穗实中重金属含量与土壤中重金属全量、土壤类型、PH值、有机质和全盐量间的预测模型，经复相关系数检验，污灌区主要的污染因子Cd和Zn的预测精度最高，模型可以成立。

O;ExC NQ0 All of the water in the area has been seriously polluted.

这地区所有的水都已受严重污染。

In local fan ventilation experiment the re-circulation factor R of polluted air is 0.366, the good exhaust effect of blast fume can be obtained by local fan ventilation.

局扇通风试验的污风再循环系数R为0.366，表明局扇通风排炮烟效果较好。

He became prime minister in 1997 and won international acclaim for his role in the Northern Ireland peace process.

他在1997年成为总理，并且因为在北爱尔兰的和平进程中发挥的作用受到国际社会的赞许。

Mixed Page Sorting Method Using the cuttable user model, this thesis proposes a mixed page sorting method by using cutted user model in server-side and complete user model in client-side.

隐私分级利用的混合式页面排序方法针对个性化搜索中搜索结果排序的问题，本文利用隐私可控开放的用户偏好模型，提出一个在客户端和服务器端分步进行的隐私分级利用的混合式页面排序方法。