为抑制聚合物为基础的污染沉积物的形成方法,通常在碱洗的碳氢化合物形成的披露。
A method for inhibiting the formation of polymeric based fouling deposits normally formed during the caustic washing of hydrocarbons is disclosed.
为抑制聚合物为基础的污染沉积物的形成方法,通常在碱洗的碳氢化合物形成的披露。
A method for inhibiting the formation of polymeric based fouling deposits normally formed during the caustic washing to hydrocarbons is disclosed.
红树林根系有能力吸收并很好地截留水中的沉积物和污染物,这些沉积物和污染物在进入海洋之前流经这些根系。
Mangrove root systems have the ability to absorb and well trap sediments and pollutants in water that flows through them before they enter the ocean.
论文还讨论影响沉积物分布的主要因素和按区域划分(北部、中部、南部)的污染特点。
We have also discussed the main factors influencing the distribution of sediments and the pollution characteristics and effects on regions (the north, the middle and the south of coast).
本文研究了珠江口滨海湿地沉积物中的重金属污染状况及其生物有效性。
This article studied the heavy metal pollution condition in the sediments of the coastal wetlands at the Pearl River estuary.
化学治理技术中,较详细介绍了壳聚糖在治理海洋沉积物中重金属污染的潜在应用价值。
And in the chemical control, the potential application of Chitosan in prevention of heavy metal pollution in Marine sediments was introduced in detail.
通过研究有机氯农药在沉积物柱样中的垂直分布特征,探讨了有机氯农药在泉州湾的污染历史。
Trough the study of the vertical distribution characteristics of organochlorine pesticides in the sediment core, the pollution history of organochlorine pesticides in Quanzhou Bay was discussed.
进入河流、湖泊和海洋的污染物类型包括有机废料、其他营养物、有毒化合物和其他危险物质、热废水和沉积物。
The types of pollutants entering streams, lakes and oceans from such sources include organic wastes, other nutrients, toxic chemicals and other hazardous substances, heated water, and sediments.
利用单项标准指数法对沉积物的污染状况进行了分析。
Then, the pollution conditions of the superficial sediments are appraised by the single standard index method.
第三代汽油清净剂在保持发动机喷嘴、进气阀清洁的同时,增加了燃烧室沉积物(CCD),这将增加部分污染物的排放。
Although third generation gasoline detergent additives keep nozzles and intake valves of engines clean, they simultaneously increase combustion chamber deposits (CCD).
相同污染浓度条件下,粗颗粒沉积物中重金属具有较高的初期释放量和释放强度;平衡释放浓度随粒度减小略有增大。
Under the condition of same polluted concentration, heavy metals in coarse sediment are released with greater amount and higher intensity dUring initial stage.
沉积物的粒度是控制沉积物中污染物分布的主要因素之一。
Grain size is one of the main factors to control the pollutant distribution in sediment.
在对湖泊或水库等浅层水域的环境变化研究和环境污染检测中,浅层水域的淤泥质沉积物取样是一项必不可缺的工作。
It is very essential in the study of environmental change and pollution monitoring to sample the undisturbed sediment from shallow water areas, such as lakes and reservoirs.
结合历史数据和现状调查,对常熟市昆承湖水下地形、沉积物、污染源和湖泊水环境质量现状进行了研究。
Based on the historical and present monitoring data, the underwater topography, deposits, pollution sources and water environment quality of Kuncheng Lake of Changshu City were studied.
现代沉积物是湖泊营养盐和污染物的重要储藏库,在一定条件下,这些内源污染负荷可能成为水体富营养化的主导因子。
The modern sediment is an important storehouse of the nutrient salt and pollutant in lakes. Under proper conditions, these internal contamination load sources can cause the eutrophication of lakes.
河漫滩上沉积物的沉积伴随着与沉积物相结合的营养和污染物质的沉积。
Deposition of sediments on river floodplains is accompanied by the deposition of sediment-associated nutrients and pollutants.
介绍了该领域研究的主要研究内容、主要研究方法和湖相沉积物重金属污染的评价方法。
It mainly discussed the research contents and the research methods in this field, and the evaluation methods of the environmental pollution of heavy metals in lake sediment.
在外源污染得到控制、水质得到改善的情况下,滇池沉积物会成为内在的金属污染源。
With the improvement of water quality, metals could be released from sediment to overlying water.
研究区域为珠江三角洲一条典型城市污染河道,采集了13个站位沉积物、上覆水、间隙水及底栖动物样品进行分析。
Samples of sediment, overlying water, pore water, and benthic invertebrate were collected at 13 stations along a typical municipal polluted river in the Pearl river Delta.
对北京大学未名湖沉积物中主要重金属含量随深度的变化进行回归分析,应用地积累指数法对未名湖沉积物中重金属污染程度做出影响评价。
According to the sedimentation, a preliminary assessment was conducted on the polluted standard of the heavy metals in the deposit of the lake, in use of I geo.
土壤和沉积物是有机污染物的最终归宿之一。
Soils and sediments are the main final fate of organic pollutants.
该图显示水果湖及西南沿岸是东湖沉积物污染的主要区域。
The isogram showed that excess phosphorus loading of sediment in the southwest part was higher than that in the northeast part.
通过太湖MS沉积岩芯元素地球化学指标的分析,对太湖沉积物污染历史进行了系统的讨论。
The pollution history of Taihu Lake is studied based on the geochemical characteristics in Core MS sediments.
重金属污染是海洋沉积物污染的一个重要方面。
Heavy metals in Marine sediments can cause many serious pollution problems.
综述了湖相沉积物重金属环境污染研究进展。
This paper summarized the progress of studies on the environmental pollution of heavy metals in lake sediment.
对太湖表层水、沉积物和水生生物样品的丁基锡污染物进行了研究。
The results show that butyltins content in most of the surface water samples is under the limit of the detection; five out of ten sediment samples are measured detectable butyltins.
湾内沉积物中锌、镉、钴和镍的可交换态比例明显高于湾外,体现了沿岸污染径流输入的影响。
The proportions of exchangeable Zn, Cd, Co and Ni in the inner bay were higher than in the outer bay, indicating the impacts of pollutant input along the bank.
在汽油中添加清净剂可以防止汽油机燃料系统及进气系统沉积物的形成,减少排放污染,降低燃油消耗。
Adding detergent in gasoline can prevent fuel supply system and air intake system of gasoline engine from forming deposits, reduce exhaust emissions, and improve brake specific fuel consumption.
结果表明:河道水质在净化后,通过引水或充氧使河道保持一定的溶解氧,可有效抑制沉积物中有机物、氨氮等污染物的释放。
The result showed that, after the river water was purified, release of organic, ammonia etc can be inhabited by drawing fresh water or aeration to improve DO concentration in river.
结果表明:河道水质在净化后,通过引水或充氧使河道保持一定的溶解氧,可有效抑制沉积物中有机物、氨氮等污染物的释放。
The result showed that, after the river water was purified, release of organic, ammonia etc can be inhabited by drawing fresh water or aeration to improve DO concentration in river.
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