查询词典 sediment-covered

The study has shown:(1) With increasing sediment depth and the woody giblets, the total organic carbon, the extraction of benzene , the total humic acids and the unhydrolyte are enhanced, while the hydrolyte is decreasing.(2) According to the GC-MS analysis, n-alkane,n-alkan-2-ones and n-alkanones are composed mainly of long-chains,such a result is thought to be characteristic of a herbaceous input from 2300a.B.P. n-alkanones exist in the samples may be considered as the evidence of microorganisms activity.(3) It is showed that the lipids is more sensitive to the climate change than the floristic. The proxy of the pollen spore of the peat stratum is different from the normal environment proxy. It is one of the main reasons that the sensitivity difference of the bog vegetation reacting to the climate isn't accordant with the log of the fat molecule fossil and biology fossil.(4) The transformation of the peat organic carbon is under the influence of temperature,acidity,organic material constituting, etc, and it showed the up-trend with the depth. In the short-term scale, the conversion of the peat organic carbon is effected by seasonal water,regional climate and vegetations; while in the long-term scale, it is controlled mainly by the climate.(5) According to the comparing the orderliness of organic compound,vegetation giblets with the depth to the characteristics of the peat molecule fossil with the section, in the development of this peatmire, 1500a B.P（210cm）is regard as the borderline of the late Holocene, the keynote of the front period is warm with several cold fluctuations, and the trend of the back period is dry and cold although there were several fluctuations.

研究表明：（1）随深度的增高及植物残体中木本残体的增多，总有机碳、苯萃取物、总腐植酸、不被水解物含量逐渐增高，而易水解物含量减少；（2）GC- MS分析显示，正构烷烃，直链烷基2-酮和正烷醇均以长链组分为主，揭示了该泥炭柱剖面2347a.B.P的母源输入以草本植物为主；甲基酮类和短链正烷醇的存在是微生物活性很大的生物证据；（3）通过有机分子标志物与孢粉、植物残体等指标的对比研究表明：脂类化合物对气候变化的反映要比植物种灵敏得多，不同沼泽植物对气候变化的敏感性的差异是脂类分子化石记录与生物大化石结果很难一致的主要原因之一；（4）泥炭有机碳的转化受到温度、酸度、有机物质组成等很多因素的影响，短时间尺度，泥炭有机碳的转化受季节性降水、地方气候和植被等因素的影响；长时间尺度，泥炭地有机碳的转化，受气候条件控制；（5）总结泥炭分子化石特征、泥炭有机质各组分含量及植物残体组成随深度的变异规律，分析结果显示该泥炭地层形成过程中，1500a B.P（210cm）可作为划分前后晚全新世的界线，前期的基调是气候偏暖，但又有几次偏干冷气候的反复，后期气候以干冷为主，其间虽有几次上升波动，但整体趋势不变。

Based on analyses of Loss-on-Ignition,carbonate content and sediment characteristics,the authors reconstruct the climatic and environmental evolution of the Gahai Lake area since the Late Glacial period.

通过对尕海沉积物烧失量和碳酸盐含量以及岩性变化分析，重建了尕海地区晚冰期以来的气候环境演变。

This paper deals with the properties of glomeration, incipience and deposition of suspended sediment form Guan he estuary by means of annular tank tests with the current driven by differential rotation of the lids (simulating the natural seawater current).

利用环形水槽及现场原沙，在动水絮凝条件下探讨了自然情况下灌河口悬沙的起动及落淤状况，建立了泥沙平衡浓度与流速的关系，并由此得到某种沙的不淤流速值。

This time we samplinged and analyzed the river-water and bottom sediment in the goldfield of Shaanxi Tongguan which is the representative goldfield in China. We not only evaluated the situation of heavy metals pollution arose by mining, but also analyzed the distribution regularity about heavy metals pollution in the space and the correlation among heavy metals.

本次对我国的典型金矿区—陕西潼关金矿区河流中的河水和底泥进行采样分析，评价采矿导致的该地区重金属污染状况，分析重金属污染的空间分布特点和几种重金属之间的相关性，进一步提出金矿区河流重金属污染的治理方案。

The results show that finer grained sediment samples tend to have higher concentrations of As and Pb.

研究结果发现磺港溪底泥中的砷、铅浓度皆会随著颗粒细粒化而明显地增加。

The carbonate rock-argillaceous rock, limestone-siliceous shale and sea-bottom clastic rock developed from east to west in Pingliang Formation of the western Ordos Basin,which shows the lithological sequence of marine sediment resulted from increasing water depth. The graptolite shale and marl with high-abundance hydrocarbon are formed in the palaeogeographic environment of deepwater slope.

鄂尔多斯盆地西缘中奥陶统平凉组自东而西发育的碳酸盐岩—泥质岩、灰岩—硅质页岩和海底碎屑岩反映了海相沉积因水深变大而形成的岩性序列，含有机质丰度高的泥质和泥灰质烃源岩形成于深水斜坡相的古地理环境中。

The moderate halophile strain Nj223 was selected from Prydz Bay deep-sea sediment and identified by 16S rDNA as Halomonas sp.

对普里兹湾深海沉积物中筛选到的中度嗜盐菌盐单胞菌Nj223Halomonas sp。

At the end of the of headland ,sediment is apt to fill up.

在人工岬角底端处，容易产生泥沙的淤积

A very complicated underground cavern system located in the thin mountain body on the left bank of the Xiaoliangdi Project is composed of a number of underground structures, including 3 orifice tunnels, 3 sediment tunnels, 3 free surface flow tunnels, 6 headrace tunnels, 3 tailrace tunnels, underground powerhouse, transformer chamber, draft tube gate chamber and also many tunnels for grouting, drainage, access and other uses.

小浪底工程左岸单薄分水岭山体的地质条件复杂，地层为砂岩夹有薄层泥岩，主要断层有F28、F461、F236、F238和F240。在左岸山体中布置有3条孔板洞、3条排沙洞、3条明流洞、6条引水洞、3条尾水洞、地下厂房、主变室、尾闸室以及为数众多的灌浆洞、排水洞、施工洞等，形成非常复杂的地下洞室群系统。水库蓄水后左岸山体出现了远大于原先估计的渗流量。

Similar sediment pollution scenarios are occurring in the headwaters of the Salween and Yangtze Rivers.

在萨尔温江和长江上游也存在类似的泥沙污染状况。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"