The primary pollutant of surface sediment is Organic matter.
表层沉积物主要污染因子为有机质；
These cores were passed along the surface sediment by the diver, and stopper were installed at both ends.
这些样品柱由潜水员沿沉积物表面方向采集，两端均塞住。
The lead concentration of surface sediment samples collected from the Dalian Bay and the adjacent sea area have been examined.
大连港及其附近海域底质表层样品铅含量分析表明，底质中铅含量较高，污染严重。
The results showed that the content of total phosphorus were higher in the surface sediment of mouth of lake in the north of Chaohu Lake.
以巢湖为研究对象，分析研究了巢湖沉积物总磷含量的水平、垂直分布。
The sporopollen distribution and its formation causes in the Haizhou Bay are discussed on the basis of sporopollen analysis of surface sediment.
对江苏海州湾近岸海区的表层沉积物进行孢粉分析，总结该研究区的孢粉分布规律及成因。
The speciation analysis of the elements Cu, Zn, Pb, Cd, Cr and Arsenic was carried out among the surface sediment in different sea areas, different stations.
对不同海区、不同站位表层沉积物中Cu、Zn、Pb、Cd、Cr和As元素的各形态含量及分布特征进行了详细分析。
The surface sediment grade of the bar becoming finer gradually along the bar westwards. It can continue to exist under the action of the long period common wave...
由于该水下沿岸沙坝是因台风浪破碎形成的，故它能够在台风浪过后长期的常风浪作用下继续存在。
These results are related to the characteristics of seafloor surface sediments such as physical-mechanical features, grain contact state and sediment microstructure, etc.
这些结果与海底浅表层沉积物的物理力学性质、颗粒接触状态、颗粒的微结构等特征有关。
Because of the effects of hydrodynamics and sediment grain size, the contents of different forms of nitrogen in surface sediments at stations in the Yellow Sea Trough were higher.
受水动力及沉积物粒度的影响，不同形态氮在黄海槽内各站位沉积物中的含量较高。
The diatom assemblages of surface sediment in tidal beach supply a very important scientific evidence for restoring the paleoenvironment, the changes of shoreline and the sea level.
潮滩表层沉积的硅藻组合研究为利用化石硅藻恢复古环境、岸线变迁、古海面变化提供重要的科学依据。
Diatom data of 192 surface sediment samples from the marginal seas in the western Pacific together with modern summer and winter sea surface temperature and salinity data were analysed.
本文研究了西太平洋边缘海192个表层沉积物硅藻数据及现代冬夏季表层温度、盐度数据。
So sediment is transported and then deposited and it forms layers on the Earth's surface over time.
所以沉积物被运输，然后沉积，随着时间的推移，它在地球表面形成了层。
As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.
作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。
The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface.
这次爆炸将大约100万亿吨的尘埃提升到大气中，这一数字可以通过测量这些尘埃降落到地表时所形成的沉积层的厚度来确定。
Sediment disaster is one of the major disasters on the earth surface.
泥沙灾害是地球表层的主要灾害之一。
And sediment samples brought carefully to the surface were found to contain bacteria and archaea.
科学家还发现从深海小心翼翼带到地表的沉积物样本里含有细菌和古代细菌。
On the other hand, as iron powder surface modification method, the copperized replacement technics is simple, low cost, fast sediment speed and has little environmental pollution.
另一方面，置换镀铜作为铁粉表面改性方法，工艺简单，沉积速度快，成本低，工艺流程中环境污染小。
By analysis of sand grain size in sediment microenvironment of modern rivers, the size and shape of grain and surface texture feature of quartz grain were described in this paper.
本文根据现代河流的已知沉积微环境中的砂样分析，阐述了河北平原河流沉积物的粒度成分、形态和石英颗粒的表面结构特征。
Thrombosis is a blood component which formed blood clots or sediment on the surface of the intima in blood vessels or the heart in the blood circulation, leading to circulatory disturbance.
血栓是血液成分在血液循环中于血管或心脏内膜表面形成的血液凝块或沉积物，导致循环障碍。
For example, freeway surface runoff is formed the role from rain washes freeway, which introduce sediment to the runoff.
如公路路面径流问题，其形成是由于降雨对路面的冲洗，将路面沉积物引入径流中。
The boundary condition at bed surface of diffusion equation of nonuniform sediment is derived based on the concept of exchange intensity of stochastic theory by the author.
文中首先给出了由我们建立的床面泥沙交换理论导出的非均匀沙扩散方程的边界条件。
The soil solute transport with surface runoff and sediment was greatly impacted by the soil texture and solute character.
土壤质地和溶质性质对土壤溶质地表迁移过程有较大影响。
Its main work includes the Yellow river sediment cross-section tests, river bed surface quality sampling and particle size distribution analysis and so on.
其主要工作内容包括黄河河道断面淤积测验，河道表层河床质取样及颗粒级配分析等工作。
Flat versions allow sediment and particles to sweep past the measurement surface, minimizing risks of abrasion, breakage and coating.
平面型允许沉淀物、微粒掠过测量面，并可把擦伤、损坏和镀膜的危险降到最小。
Slope length is one of the important geomorphologic factors affecting the surface runoff and sediment yield.
坡长是影响坡面径流和水流侵蚀产沙的重要地貌因素之一。
SEM showed that sample surface of passive film was grid, and crack was branch-type, and sediment on passive film was bloom shape.
扫描电镜显示，试样表面的腐蚀产物膜呈网格状，裂纹呈树枝型，腐蚀产物膜上的沉积物呈花朵状；
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.
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 water surface level, velocity field and sediment concentration field of gravel sand bed and sand bed reach on Jianjiang river were refined simulated.
细致地模拟了荆江卵石夹沙河床及沙质河床浅滩河段的水面线、流速场、含沙量浓度场及河床变形。
The water surface level, velocity field and sediment concentration field of gravel sand bed and sand bed reach on Jianjiang river were refined simulated.
细致地模拟了荆江卵石夹沙河床及沙质河床浅滩河段的水面线、流速场、含沙量浓度场及河床变形。
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