查询词典 sediments

Eastern Himalaya Syntaxis is an important area in studying climatic-tectonic reciprocity. In this paper, single-crystal-high-precision laser ~(40)Ar/~(39)Ar method was used to build the thermal evolutional history of Eastern Himalaya Syntaxis by tests on river sediments on the lower reach of Yalung-Tsangpo River. The contrast of age statistical results against the figure showing the changes in rate and angle of convergence during India plate has been colliding against Eurasian plate since late Mesozoic and the diagram consisting of global deep-seaδ18O andδ13C records is done, for the purpose of revealing climatic and tectonic information on rock cooling and referring the relationship between thermal evolutional history and climate and tectonics.

东喜马拉雅构造结是气候与构造相互作用的典型地区，本文尝试使用单颗粒高精度单次全熔~(40)Ar/~(39)Ar法对采自雅鲁藏布江大峡谷下游墨脱县城以南约50 km处地东河段的细粒现代河沙进行年代学测试，建立东喜马拉雅构造结的热史演化序列，并通过与代表全球气候变化的18O、13C浓度变化曲线和印度大陆向北运动的速度、角度变化曲线的对比，揭示气候、构造因素与东喜马拉雅构造结热史演化的耦合，推定热史演化与气候、构造过程的关系。

Using a comparative and simulative approach, this study quantitatively explored the effects of macrobenthos (Ilyoplax deschampsin and Corbicula fluminea) on the exchange of nitrogen across the sediment-water interface and the early diagenesis of nitrogen in tidal sediments from the Yangtze Estuary....

研究表明，谭氏泥蟹主要通过掘穴活动增加沉积物-水-气三相接触界面，促进沉积物中的无机氮(NH+ 4- N、NO- 2 -N和NO- 3- N)向上覆水体中扩散，并且也加快了沉积物中氮的氨化作用和硝化作用速率，而河蚬则主要通过生理活动机制影响潮滩生态系统内氮素的迁移转化过程。

Based on the compared and simulated experiment, it was quantitively studied on the effect of macrobenthos (Ilyoplax deschampsin and Corbicula fluminea) on the exchange of nutrient across the sediment-water interface and the early diagenesis of nutrient in the tidal flat sediments from the Yangtze Estuary. Ilyoplax deschampsin and Corbicula fluminea affected the exchange of nutrient across the sediment-water interface by the different biological mechanisms.

本文依据长江河口滨岸潮滩大型底栖动物的自然分布特征，选取了两段典型的研究区域－崇明东部潮滩和浒浦岸段边滩，运用实验模拟和对比分析方法，定量地研究了大型底栖动物谭氏泥蟹和河蚬对潮滩生态系统中营养盐的界面扩散及其早期成岩变化的影响。

Corbicula fluminea however affected the exchange of nutrient nitrogen across the sediment-water interface by the physiologic mechanism such as the excretion. Crabs such as Ilyoplax deschampsin changed the physical structure of the tidal flat sediments by the strong bioturbation, and increased the content of dissolved oxygen in the sediment by enhancing the touched area of sediment and air.

谭氏泥蟹主要通过生物扰动，增加沉积物-水-气三相界面之间的接触面积，促进沉积物界面附近营养盐物质交换过程；而软体动物河蚬则主要通过生理活动，影响潮滩沉积物中氮营养盐的界面扩散过程。

Global correlation for strontium isotope curve in the Late Cretaceous of Tibet and dating marine sediments.

西藏晚白垩世锶同位素曲线的全球对比及海相地层的定年。

Also on the basis of analyzing the two tidal periods successive survey results on the tidal current and suspended sediment at No.5 station in the tidal channel at the crunode of DongDaGang and Dayaomen tidal channel , the tidal characters and process of suspended sediments are further understood.

本论文对辐射沙洲东大港水道4号站位连续2个潮次的水文、泥沙测量资料进行了深入的分析、研究，论述了在潮流作用下泥沙的悬浮与沉降变化过程，并对悬沙的垂线分布进行了拟合，给出了对数拟合关系式，并对该关系式进行了讨论和验证，初步明确了西洋水道主槽的悬沙垂线分布基本规律。

That is, we can consider the raised temperature a single impulse and predict the ambient temperature and temperature gradient of the sediments by fitting with the cylindrical temperature decay function.

另外我们也发现直接从温度梯度的资料用该函数来推求最终之背景温度梯度的方法又优於先用该函数推求背景温度再求背景梯度的方法。

The project team has taken loess, lacustrine and peat sediments and tree ring as the research carrier, a systematic study has been carried on the warm phases of the different period (60-25 ka, last deglaciation, Holocene, the recent e few hundred years) and the last interglaciation on the basis of the extensive field investigation and laboratory analysis.

项目组以黄土、湖沼和树轮等沉积物为研究载体，经过大量的野外考察和实验室分析测试，对我国半干旱带末次间冰期和距今六万年以来不同时间段的温暖期（6万年到2.5万年、末次冰消期、全新世、最近几百年）进行了系统的研究，取得了一批重要的阶段性成果，确认了东亚季风气候和温暖期的不稳定性特征。

Adsorption and desorption characteristics of Cd and Zn and factors affecting adsorption in sediments of Lake Dianchi were studied.

研究了Cd和Zn在滇池沉积物中的吸附－解吸特征并分析了影响其吸附的因素。

This product is non-flammable, non-explosive, non-moisture, strong detergency of automobile air conditioning due to temperature changes and long-term wear and tear resulting from the use of oil components and oxidation decomposition to remove sediments have a strong role.

本品不易燃、不易爆，不含水分，去污力强，对汽车空调因温度变化和长期使用部件磨损产生的油污及氧化沉积物有极强的分解去除作用。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。