查询词典 sediments

The distributions of BFRs in the abiological systems (such as the air and natural sediments) and in the tissues of the biological systems (such as the animals and human beings) were reviewed in this paper.

笔者就溴阻燃剂近十年来在空气、下水道淤泥和沉积物等非生命环境体系以及动物和人等生命体系的分布情况进行了综合分析，结果发现溴阻燃剂在非生命和生命环境体系中均有增加的趋势。

In addition, mixing between abyssal sediments on the subducted plate and basic magma is also a factor that can not be negligible.

同时，俯冲板块上深海沉积物与基性岩浆混合作用也是不容忽视的因素。

Under the different pH conditions, the migration and transformation behavior of each form of phosphorus released from the lake sediments into water body was studied by means of simulation. The results show that under alkalic condition or acidic condition, the temporal and spatial distribution of phosphorus in the water body changes with its releasing mechanism, and its migration and transformation behaviors are various. The change of pH value has no obvious effect on such transformation, but the total phosphorus in the water body has substantial effect on the concentration change of various forms of phosphorus.

通过室内模拟湖泊沉积物在不同pH条件下，研究释放到水体中各种磷形态的迁移转化行为，结果表明：碱性条件和酸性条件下，水体磷的时空变化由于其释放机制的不同，其迁移转化行为各不相同，同时，pH值的变化对水体中各种磷的相互转化没有明显的作用，各种磷形态的浓度变化，在很大程度上取决于水体中总磷的浓度。

According to sources of the sediment the deep-water sediments can be divided into the allochthonous and the autochthonous types.

深水沉积根据沉积物来源可以分为深水异地沉积和深水原地沉积。

Therefore, lake sediments have recorded eutrophication process of Lake Dianchi from oligotrophic lake to eutrophic lake. Especially in the past several decades, both autochthonous and allochthonous organic matter display rapid increasing. Combined with isotopic data, a conclusion is drawn that Lake Dianchi has entered into a hypereutrophic stage.

因此，湖泊沉积物记录了滇池从一个贫营养的湖泊演变成富营养化湖泊的过程，特别是最近几十年，滇池内源有机物和陆源有机物的输入都呈现快速增长的趋势，结合同位素组成特征表明滇池进入了重富营养化阶段。

Due to their narrow niches, short lifecycle and being sensitive to environmental changes, the abundant testate amoebae fossils in sediments might provide high-resolution paleoenvironmental information.

有壳变形虫是一类广泛分布在淡水潮湿环境中的根足纲原生动物，具有较窄的生态幅、较短的生命周期，对环境变化敏感等特点，因此沉积物中保存的有壳变形虫化石可以提供高分辨率的环境信息。

Due to their narrow niches, short lifecycle and being sensitive to environmental changes, the abundant testate amoebae fossils in sediments might provide highresolution paleoenvironmental information.

有壳变形虫是一类广泛分布在淡水潮湿环境中的根足纲原生动物，具有较窄的生态幅、较短的生命周期，对环境变化敏感等特点，因此沉积物中保存的有壳变形虫化石可以提供高分辨率的环境信息。

Although the range of all metals studied in water samples did not exceed the National Water Quality Standard for Fisheries (GB 11607－89), relatively obvious contamination of Pb, and in particular Zn and As were found by the range in the samples of sediments and Anodonta woodiana.

虽然水样中各重金属均未超过国家渔业水质标准（GB1160789），但底泥和背角无齿蚌的结果显示出Pb，特别是Zn、As的污染比较明显。

The anoxic sequential batch titration technique was used to determine the binding capacity of sediments for copper .

研究沉积物对重金属的结合能力有助于制订沉积物环境质量基准

The aim of this study is to discriminate between the geogenic natural content and the anthropogenic contribution in the collected sediments.

此项研究的目的是区分在已采集的沉积物中地质成因的自然含量和人为成因贡献值。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。