Four lakes with different pollution state (mesotrophic, meso-eutrophic and eutrophic) were studied and compared over a period of one year for the community structure and biopersity of zoobenthos.
首次对湖北梁子湖水系污染程度不同(中营养型、中富营养型、富营养型)的4个湖泊的底栖动物群落结构和物种多样性进行了周年研究,结果表明,底栖动物种类数、物种多样性与湖泊受污染程度呈负相关系,密度与污染程度大体上呈正相关。
In order to study current situation of Benxi city groundwater?we appraise pollution state,investigate and understand geological environunent charecteristic of Benxi.
为掌握本溪市地下水现状 ,调查了解本溪市地质环境特征 ,采用与污染起始值相比较的方法 ,评价其污染状况 ,通过计算地下水污染指标 ,划分地下水污染程度 ,为合理开发 ,利用和保护地下水资源提供依
The paper presented the method to detect the pollution degree of composite insulator surface by measuring its grounding current.
文章提出了通过测量绝缘子接地电流来检测复合绝缘子表面污秽程度的方法。
Under different pollution degrees,the pollution flashover voltage of uniform increase voltage(Uav)is 4.
不同污秽程度下,均匀升压法得到的污闪电压Uav比50%耐受电压法得到的污闪电压U50%升高了4。
The results showed that the percentage of isolate containing plasmids was related to the pollution degree of the water body.
结果表明:质粒检出率与水体的污染程度密切相关,在清洁河段中,质粒检出率为5。
This paper estimates the noise pollution degrees of Dalian 10 primary traffic routes based on a fuzzy mathematics integrated assessment method.
采用基于模糊数学的综合二级评判方法评价大连10条城市道路交通环境噪声污染程度。
The pore water quality dynamic monitoring data are analyzed to evaluate pollution degree and quality status of pore water in Yuxi Basin synthetically,according to the groundwater and drinking water quality standard of China.
以孔隙水水质监测和民井调查资料为基础,按地下水质量和生活饮用水国家标准,对玉溪盆地孔隙水污染程度和质量现状进行综合评价。
evaluation of groundwater pollutio
地下水污染程度评价
Compared with the previous year, the order of the pollution level remained same and the pollution extent is quite close.
与上年相比，污染轻重顺序未变，污染程度相近。
The pollution of the waters is more serious compared with the previous year.
与上年相比，水体污染程度加重。
Stricter limits on pollution levels must be imposed.
要采取更严厉的措施,控制污染程度。
The pollution in the western half of Chao Lake is obviously more serious than that in the eastern half.
巢湖西半湖污染程度明显重于东半湖。
Evaluation index for membrane fouling degree--Membrane pore blocking rate
膜污染程度的评价指标——膜孔堵塞率
The contamination degree and element was related with industry structure in Xuzhou.
污染元素的种类及污染程度与徐州市的产业结构密切相关。
The goal of that study was to measure pollution levels in a clean environment.
其目标是在一个清洁的环境下测量污染程度。
Power plants that burn coal add greatly to air pollution.
燃煤的发电厂大大地加重了空气的污染程度。
The statute pides ozone non-attainment areas into five classes, depending on the severity of the pollution.
法令依据污染程度把臭氧非达标区划分成5类。
COD;chemical oxygen demand
化学需氧量(衡量水污染程度的一个指标)
Measurement of the Chromium s Pollution in Lower Reaches of Hanjiang River as well as Chaozhou City Zone;
韩江潮州市区江段水质六价铬污染程度的测定
Surface Source Pollution Control in the Dongjiang--Shenzhen Water Supply Scheme
东深供水工程面污染源管理工作制度
Pollution of the water supply reaches a level pernicious to the health of the population
水源污染已达到危及居民健康的程度
Pollution of the water supply reach a level pernicious to the health of the population.
水源污染已达到危及居民健康的程度。
How much pollution is too much?
污染达到什么程度才算过分？
pollution has destroyed the aerosphere to some extent.
污染在一定程度上破坏了大气层。
classified facility
按可能引起污染的程度被定级设施