推移质中有机碳和全氮均有富集现象。
Organic carbon and total nitrogen in bed load had enrichment phenomenon.
当今众多推移质计算公式，其成果都与实际难符。
At present, there are a great many calculating formulas of bed load; nevertheless, the calculating result disagrees with the actualities.
研究长江感潮河段推移质输移规律和沿程分布规律。
Rule of bed load transport in tidal reach of the Yangtze river and distributing rule along the river are studied.
此外，山区基岩风化与重力侵蚀也产生大量的推移质沉积物。
Weathering of rocks in the mountainous area and gravitational erosion also play important part in contributing to the bed load which easily deposits.
航道淤积由三部分构成：悬沙、推移质和底部高浓度含沙层。
The channel sedimentation comes from three parts, i. e. the suspended sediment, high sediment layer, and bed load.
经上述修正的推移质公式与试验资料符合良好，可供计算应用。
The bedload transport formula that has been modified as mentioned above well agrees with the experimental data and can be applied to computation.
在水流很强时，爱因斯坦公式所给出的推移质输沙率有可能偏小。
When the flow intensity is high, the transport rate of bed load as given by Einstein formula might be too small.
这对于了解推移质运动机理及进行推移质输沙率研究有着重要的意义。
It is very important for study of mechanics of bed-load transport and of bed-load transport rate.
主要在床沙与推移质交换的同时，考虑了床沙与推移质向悬移质的净交换。
Especially, while exchanging between bedload and bed material, the net transport of bed load towards waters was considered.
本文采用激光流速仪对挟带推移质水流的紊流结构进行了较系统的试验研究。
Experimental data of moving sand grains are introduced and the turbulent structure of flow is investigated by laser current meter.
泥沙推移质的计算考虑了床面坡度对推移质输沙率和临界启动剪切力的综合影响。
Computation of the bed load transport considered the influences of bed slope on both critical bed shear stress and bed load transport rate.
试验发现推移质泥沙随水流绕过圆柱体时，将在圆柱周围的床面上形成一个无沙区。
When the bed load round the cylinder with water flow, a region of non sediment's moving will be formed in the bed layer near the cylinder.
水流中跃移颗粒的受力分析及其运动机理的研究对于推移质运动理论有着重要的意义。
Forces acting on saltation particles and the mechanism of saltation are very important in bed load research.
该模型考虑了非均匀推移质不平衡输移，并引入混合层模式用于模拟河床组成的变化。
This model takes into account non-equilibrium transport of non-uniform bedload and introduces the mixed layer model to calculate the changes of bed material grain class.
进而阐述了非均匀沙推移质低输沙率规律，导出了其理论表达式，并进行了数值计算。
And then, the law of low transport rate of the nonuniform bed load is presented, its theoretical expression is derived and the calculated results and given.
本文的研究成果对分析没有实测资料的山区河流卵石推移质的运动规律具有重要的参考价值。
The achievement of this paper has an important reference value in analyzing the mechanics of bedload movement in the mount river without field data.
沙丘形态参数经常偏离统计的波长-波高曲线，数值实验结果显示，这与推移质输运率有关。
There tends to be deviations of the height-length data points from statistical H-L curves; numerical experiments demonstrate that such deviations may be associated with the bedload transport rate.
进入涡管槽口的挟沙水流会形成强有力的螺旋流沿涡管流动，能有效地排除底部推移质泥沙。
The flow with sediment trapped by the slit of the vortex tube can form vortex inside the tube and exclude efficiently the coarse sediment near the bed layer in front of the tube.
最后对植物坝前上游段推移质泥沙的输移特性进行了研究，初步探明了植物“柔性坝”的固沙机理。
Lastly, studies transportation characteristic of bed load sediment of upstream end before vegetation dam. Preliminarily clear sand-binding mechanism of vegetation "flexible dam".
认为平原细沙河流的泥沙模型设计所遵循的相似准则应包括水流运动相似、推移质运动相似和悬移质运动相似。
The similarity criteria for designing the sediment models for plain sand-bed rivers include similarity of flow, bed load and suspended load.
实测资料表明，推移质输沙率与床面层内有效水流功率有良好的相关性，且高于推移质输沙率与水流功率的相关性。
The measured data show that the bedload sediment transport rate is related more closely to the effective stream power within the bed-surface layer than to the river stream power.
比较选用能较适用于该河段的推移质输沙率公式，计算出各断面的推移质输沙量，得出推移质输沙量与流量的关系曲线。
An appropriate formula of bed load rate is chosen to calculate the amount of bed load of each section. Curves of amount of bed load and discharge are got.
采用平面二维水流泥沙数学模型进行堤线改线影响计算，模型考虑了悬移质及推移质泥沙运动、桥渡及料场的阻力变化。
The2-D flow and sediment mathematical model is used to compute the effect of the engineering of riverside embankment change.
根据实测地形和水文泥沙资料，分析了葛洲坝枢纽运用后宜昌河段的河床冲淤变化、推移质和床沙的粗化以及枯水位的变化。
The river channel change, the bed load and bed material armoring, and the water level lowering after the operation of the Gezhouba project are analyzed based on the topographic and hydrologic data.
提出了一种计算推移质输沙率的方法及公式，该公式表明，在水流强度一定时，输沙率并非为一个常量，而是随颗粒在床面的相对暴露度而变。
The formula shows the transport rate is not a constant but varies with the relative exposure degree of particles that lying on riverbed when the flow intensity is at fixed value.
根据砂质海岸和粉沙质海岸地区港池和外航道的泥沙淤积的计算机理，确定了悬移质和推移质泥沙的计算公式与相关参数，分别对回淤量和骤淤量进行了计算。
The calculation formula and parameter of sediment siltation should accord with the arenaceous and silt coast condition. The back and sudden magnitude siltation quantity is calculated here.
重要的是要一步一个脚印，向公司展示IT能够帮他们做什么，然后，随着时间的推移，就会发生质的飞跃。
It's a matter of taking it a step at a time, showing the organization what it can help them do, and then, over time, there's this natural transition.
随着时间推移，我们与各利益相关方的关系，不论在深度还是广度上都有了质的飞跃，而不可动摇的是指引我们践行诚信的道德准则和价值观念。
Our relationship with stakeholders of course has evolved in scope and sophistication but the moral principles and values governing how we work together have remained unshakable.
失眠和神经质(入睡困难或经常在夜间醒来)，可能发生在头几个星期，但往往随着时间的推移减弱，或如果剂量减少。
Insomnia and nervousness (trouble falling asleep or waking often during the night) -may occur during the first few weeks but often subside over time or if the dose is reduced.
当我们刷牙齿时珐琅质磨损可以更容易和随著时间的推移变得更薄。
When we then brush our teeth, the enamel can be worn away more easily and become thinner over time.
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