At present the study of the movement of sands mainly focuses on theoretical analysis of and numerical simulations of blown sand on the flat bed of sand.
目前对风沙运动的研究主要集中在对平坦沙床上的风沙流进行理论与数值模拟，而对复杂地形和沙丘上的风沙运动的理论与数值模拟则相对很少。
The prospector panned off bits of sand and gravel scooped from the bed of a stream.
探矿者淘选从河床中挖出的少量含金泥砂和沙砾。
And besides, regardless of when you read this tutorial, I posted it after a Memorial Day of fun in the sun on the beaches of Florida. I just put the family to bed and I still have sand on my feet.
除此之外，不考虑阅读教程的人很多是初学者的问题，发布这篇教程的时候，我正在佛罗里达州的阳光海滩上，脚上还沾满了沙子。
The selection of model sand is the key problem in the design of a mobile bed model test.
对于研究泥沙问题的动床模型试验，模型沙的选择是模型设计的关键。
Green sand casting casting clay weight from a few kilograms until decades kilograms, machine tool lathe bed and clay dry type of casting production can be weighed dozens of tons.
粘土湿型砂铸造的铸件重量可从几公斤直到几十公斤，机床床身而粘土干型生产的铸件可重达几十吨。
The design methods include how to select bed load and bed material within the suspended load and how to determine the feed of the model sand and the time of the experiment.
模型设计方法主要包括：如何合理选择模型河床质和床沙质，如何确定进口断面加沙量和放水时间等。
Then, the calculating method of initial scour velocity of bed sand around submerged spur dikes is suggested.
在分析基础上，提出了漫水丁坝坝头床沙起冲流速的计算办法。
You are the wind I am sand, I pour you a cup of tea, you doze off my bed, I see you baby baby.
你是风儿我是沙，你端杯儿我倒茶，你打盹儿我铺床，你生孩儿我看娃。
The prospector panned off bits of a sand and gravel scooped from the bed of a stream.
探矿者淘选从河床里挖出的少量含金泥沙和砂砾。
The prospector panned out bits of sand and gravel scooped from the bed of a stream.
探矿者淘选从河床里挖出的少量含金泥沙和砂砾。
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 probability of the final movement of grain can indicate its movement tendency, and the change of the sand-bed height can reflect the transformation status of grain movement.
根据最终状态概率代表颗粒运动趋势的原理，砂床高度的变化应是床层表面颗粒运动状态转换的结果。
Based on the low pressure of the coal bed gas well, the sand removal technology by mechanical sand fishing is put forward.
根据煤层气井的低压特点，提出了通过机械捞砂来清砂的技术。
Due to the increase of water pumpage and the sand excavation at the river bed, the groundwater table became declined and water quality degraded in Dongwu water sources area, Tai'an City.
泰安市东武水源地近年来由于开采逐年增加、河床挖沙等因素的影响，水源地附近地下水环境出现了水位下降、水质退化等环境地质问题。
The quantitative relation among the threshold wind velocity of sand movement, sand diameter and the agglutinate stress of sand bed is obtained with the mentioned dimensionless variables.
经分析得到起沙风速与沙床沙粒粒径和沙床粘结力间的数量关系。
Pencroft was not wrong in his anticipations. Three hours later at low tide, the greater part of the sand forming the bed of the channel was uncovered.
果然不出潘克洛夫所料，三个钟头以后，在低潮的时候，海峡有大部分都露出了沙滩。
The sand stratum in old river bed is important factor affecting stability of dam.
古河道砂层的存在，是影响围坝稳定的主要环境因素。
The high mining height hydraulic support is designed for the special geologic condition of Shangwan Coal Mine, such as shallow buried depth, thin bed rock and thick aeolian sand.
大采高液压支架是针对上湾矿煤层浅埋深、薄基岩、厚风积沙等特定地质条件而研制的一种高性能综采液压支架。
To settle loose bed, quick sand and ingress of groundwater are trouble some problems during coalmine construction.
如何解决煤矿建井中的松散层、流沙和地下渗(涌)水是目前建井工程中的棘手问题。
The similarity criteria for designing the sediment models for plain sand-bed rivers include similarity of flow, bed load and suspended load.
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。
A method is proposed for calculating the bed suspended load ratio of transport rate both uniform and non uniform sand in coast sediment movement as well as for calculating that of channel deposition.
提出了海岸泥沙运动中均匀沙和非均匀沙输沙率推悬比和航道淤积推悬比的计算方法。
The two-phase flows over the sand bed and in the pipe are simulated, the different distributions of volumetric fraction are found and analyzed.
计算了沙层上及直管中的两相流的流动，发现了颗粒浓度两种截然不同的分布，并对此进行了分析。
Lastly, studies transportation characteristic of bed load sediment of upstream end before vegetation dam. Preliminarily clear sand-binding mechanism of vegetation "flexible dam".
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。
At upper flow regime, the total stream power gradually deviate the effective stream power from movable plane bed to existence of sand wave.
在高能态区，从动平整床面到沙浪的出现，总水流功率又逐渐背离有效水流功率。
The technology measures of bed rock aciding, preflush and gelling acid fracturing, as well as sand fracturing etc. are used.
采用了基岩酸化、前置液酸压裂、胶凝酸酸压裂和加砂压裂等工艺措施。
Analysis shows that the adjustment of the reservoir, the coming water and sand, and the form of the river bed are the main factors of sediment change.
分析表明，水库调度、来水来沙、河床形态是影响冲淤变化的主要因素。
But, what happens to the Sand Dragon at the end of the day when Edward goes home to bed?
可是，就在天黑爱德华准备回家睡觉时，这条沙龙出了什么状况呢？
The overlying strata of the coal bed roof are dominated by sedimentary rocks such as shale, sand stone and limestone, whose physical and mechanic properties differ greatly.
煤层顶板覆岩一般以页岩、砂岩、灰岩等沉积岩为主，其物理力学性质差异很大。
According to this principle, we made a quantitative interpretation on thickness of oil-bearing sand bed in bottom member of Dongying formation in south Bohai sea.
我们根据这一原理实现了对渤海南部东营组下段含油砂层厚度的定量解释。
There exists extremely notable linear ration between the thickness of dry sand bed and evaporating capacity.
干沙层厚度与沙丘表层的蒸发量之间存在极显著的线性关系；
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