查询词典 sediment-covered

On the basis of the Washburn principle , the contact angles of various liquids such as deionized water, sodium chloride solution of mass fraction 0.05, ethanol and ethanol-water solution of volume fraction 0.15 on the sediment surface were measured by the JF99A contact angle meter with osmotic pressure method.

根据Washburn原理研制的JF99A型粉体接触角测量仪，是利用渗透压力法测定粉体的接触角。

The invention has steps:(1) In a biochemical reactor, carrying out biological processing to get mixed liquor;(2) Separating mud with water of the mixed liquor in sediment area of the biochemical reactor, discharging supernatant solution;(3) Supernatant solution is processed in a beach purification band planted with emerging plant, floating plant and/or submergent plant, adsorption granular material and enzyme-promoted packing are arranged on lakebed of the beach purification band, film aggregate is suspended in 0.4 m depth of the lakebed;(4) The purified effluent discharges into natural water body.

本发明步骤为：(1)在生化反应器内进行生物处理，得到混合液；(2)混合液在生化反应器沉淀区进行泥水分离后，出上清液；(3)上清液进入湖滨净化带处理，湖滨净化带植有挺水植物、浮水植物和/或沉水植物，湖滨净化带水底湖床铺垫吸附粒料与酶促填料，在湖床底0.4m水深悬置挂膜骨料；(4)净化处理后的出水排入自然水体。

The reaches of greater dike breach risk mainly distribute in wandering reaches.(4) The dike breach risk of the south bank is relative higher in wandering reaches.(5)The dike breach risk of the north bank is higher than the south bank in winding reaches. Simultaneously, the evaluation results manifest that the evaluation indexes system established from the locomotion of incoming water and sediment load, the regional crustal stability, the evolvement of river regime and the stability of river dikes, can reflect the actual situation of hang river in the lower Yellow River more fully. The application of multi-hierarchical fuzzy

评价结果同时表明，从水沙运动、区域地壳稳定性、河势演变和堤防稳定性4个方面建立评价指标体系，能够更加全面的反映黄河下游悬河的实际情况；运用多层次模糊综合评判法能够较好地解决影响因素众多、作用机制复杂的悬河决溢风险问题；运用GIS技术强大的空间分析功能，使黄河下游悬河不同空间位置的决溢风险得到了量化，可以客观地反映黄河下游河道不同空间位置决溢风险的差别，对于指导防洪和河道治理的实践具有重要的现实意义。

In order to explore the influence of the bath composition on Ni-W-P alloy coating structure and properties, to find the right ratio, so as to lay the foundation for follow-up experiments, SEM/EDS, X-ray diffraction, and metallographic analysis and other methods were adopted to study the composition and structure of different chemical deposition of Ni-W-P alloy. And the hardness of different components of the sediment layers plated state and the hardness after heat treatment were measured.

为了探索镀液组分对Ni-W-P合金镀层结构与性能的影响规律，寻求合适的镀液配比，为后续实验莫定基础，采用扫描电镜／包谱、X射线衍射以及金相分析等方法，研究了不同成分和结构的化学沉积Ni-W-P合金层，测量了不同成分沉积层的镀态与热处理后的硬度。

The investigations for each set cover flow phenomena ranging from a plane bed and no sediment movement to violent antidunes.

为每个固定的掩护调查流动范围从一张平的床和没有沉淀物运动到暴力的 antidunes 的现象。

The relationship between resistance of still plane bed and energy slope has been proposed from the similarity between sediment incipient motion and still bed resistance.

从挟沙水流的平均能量方程出发，得到了推移质附加阻力的计算公式及悬移质附加阻力计算公式，并对挟沙水流的阻力进行了讨论。

First, total resistance is derived by summing different resistance components. The relationship between resistance of still plane bed and energy slope has been proposed from the similarity between sediment incipient motion and still bed resistance. And this relationship can be used in computing grain resistance.

一是从不同的床面阻力单元出发，利用泥沙起动与定床阻力之间的相似性研究了静平整床面的阻力，建立了静平整床面阻力与能坡之间的关系式，并将此式用于沙粒阻力的计算。

Based on the analyses of the flow and sediment characteristics and evolution trend of the river bed of the Fuling reach in the Yangtze River before and after the impoundment of the Three Gorges Reservoir, the water level, velocity variation and influenced range in the Fuling reach before and fifty years after the operation of the Three Gorges Reservoir with the construction of the Fuling dock and four discharge combinations are calculated by using a two-dimensional flow mathematic model.

摘要在分析长江涪陵段的水沙特性和三峡水库蓄水前后该河段河床演变趋势的基础上，运用二维水流数学模型，分析了4种流量组合情况下在三峡水库运用前和运用50年，涪陵港区码头修建前后的水位、流速变化及其影响范围。

The water surface level, velocity field and sediment concentration field of gravel-sand bed and sand bed reach on Jianjiang river were refined simulated.

给出了TSMBFOC模型在卵石夹沙及沙质分汊河段航道整治中的应用情况，在水面线、流速分布及河床冲淤详细验证及分析浅滩演变规律基础上，进行多方案比较与筛选的数值试验。

An 1-D sediment mathematic model is developed in the second part. Techniques are suggested for some problems in calculations, such as the effective suspended load carrying capacity of the different bed material reach, the coefficient of suspended load carrying capacity, the recovering coefficient of the carrying capacity, the thickness of the mixed layer, the transport width of the bedload, bifurcation and confluence of main and branch channel, and the distribution of deposition and erosion along the cross section, etc. The numerical scheme of 1-D model is induced.

第二部分建立了一维泥沙数学模型，对计算中的几个关键问题提出了处理方法，如不同床沙组成河段的有效挟沙力、挟沙力系数、挟沙力的恢复饱和系数、床面混合层厚度、推移质输移带宽度、干支流入汇及分流问题、横断面冲淤形态及断面修正方法，导出了一维模型的差分格式。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷