Can sand flow upward in the hour glass?
时间的沙漏能倒流吗？
Wind sand flow is the main calamity to the railway.
风沙流是危害乌吉铁路的主要形式；
Can tomorrow's sand flow through the glass before today's?
想着明天的种种，今天的时光也白白流逝了。
It has been shown that the velocity of sand flow and airflow at the entry of core-box was quite different.
结果表明，射砂孔位置的气流和砂流速度有显著差别。
The pile foundation is a method of disposing the foundation, it is unfavorable to encounter sand flow in the pile foundation.
桩基是土木工程各种施工中常见的地基处理方法，但桩基施工最怕出现不良地质，尤其是涌砂。
In this paper, influence of wind-sand flow on soil wind erosion was discussed using portable wind tunnel to simulate natural wind.
通过在便携式风洞内模拟挟沙气流，研究了风沙流对土壤风蚀的影响。
Through field survey of wind sand flow movement in the 100 km wind area along the Lan-Xin Railway, a new concept, the density of wind sand flow, is put forward.
通过对兰新铁路百里风区戈壁风沙流进行现场观测研究，提出风沙流密度的新概念，解决风沙流研究中如何利用现场定时观测研究风沙流动态变化特点的重大技术难题。
The water was always laden with pebbles, gravel, and sand, known as glacial outwash, that was deposited as the flow slowed down.
水里总是遍布鹅卵石、砾石和沙子——它们被称为冰水沉积，是在水流减缓时沉积下来的。
Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers.
如你所知，沉积物是通过风、水流或冰川运动等自然过程输送的物质，如沙子、砾石、化石碎片等。
Setting up and maintaining instruments there is almost impossible unless the equipment is so sturdy it distorts its own data, by interfering with the flow of water and sand.
在那里建立并且保持设备运行几乎是不可能的除非设备本身非常牢固否则在水和沙子的干扰下，设备的数据会失真。
A subterranean flow of briny water could rearrange sand grains or alter surface roughness in a way that darkens its appearance.
地下水流的流动会使得沙粒积累，并使得表面变得粗糙，从而颜色更深。
Scientists think the best explanation for the gullies is that seasonal melting of nearby water ice creates slurries of sand and liquid water, which flow down the crater's dunes.
科学家认为这些沟壑形成的最佳原因是，附近的水冰因季节性消融而形成的沙浆及液态水流下山丘形成了这些沟壑。
In order to obtain the expected sand cooling and humidifying effect, requiring sand in the boiling bed to flow in uniform.
为使型砂获得预期的冷却和增湿效果，要求型砂在沸腾床上均匀的流动。
Good reservoir mainly includes sublacustrine fan-in-fan braided channel sand body and axial gravity flow channel sand body.
好的储集体主要有湖底扇中扇辫状水道砂体和轴向重力流水道砂体。
Love is in the hands of the sand, the more tight grip, the faster flow, finally, will have nothing.
爱是一把手中的细沙，握得越紧，流得越快，最后，会一无所有。
It is wrong that some users want to reduce the operation cost through reducing the flow rate of sand.
有些用户想要通过降低砂料流速降低运行成本，这是错误的。
The effect of capillary pressure and water saturation on sand production has been researched through the core flow test in this paper.
通过室内岩心流动试验，研究了毛管力、含水饱和度对岩石出砂规律的影响。
Developed wellbore transient flow model and friction calculating method for the sand mixed fluids effected by propant.
建立了井筒不稳定流动模型，提出了支撑剂影响下的混砂液摩阻计算方法。
Injecting the mixing liquid of mud and foam achieves good effects for plastic flow property conditioning of gravel with sand.
注入泥浆和泡沫的混合液对砂卵石地层进行塑流化改善效果良好。
The behavior properties and corresponding mechanics of the three modes of liquefaction due to earthquake, was stated, namely sand boil, flow slide and cyclic mobility detailedly.
阐述了地震液化的三种表现形式砂沸、流滑和循环活动性的表现形式、作用机理和触发条件。
Based on the digital mask technique, the distribution of sand area density and the sediment-transport rate in flow field were obtained.
采用图像处理的数字掩码技术，处理图像得到了沙粒在流场中的面密度以及单宽输沙率。
In recent years, the numerical simulation of sand blowing process based on two-phase flow theory has been taken seriously and some results have been achieved.
近年来，利用两相流理论对射砂过程进行数值模拟已经受到国内外研究者的重视，并取得了一些进展。
The influeace of the sediment particles to the flow turbulence is an important problem of the water sand two phase flow.
泥沙颗粒对水流紊动的影响是水沙两相流运动的重要问题之一。
A method that is used to monitor water flow in the bottom of drain sand pipe is designed.
设计了一种通过监测排砂管线底部水流量来估算地层出水量的方法。
Combining the theoretical analysis and the existing experimental achievement, the important role of secondary flow for sediment ejection in sand funnel is researched for the first time.
根据理论分析和现有试验成果相结合的方法，研究了排沙漏斗中二次流在排沙中的重要作用。
Experimental data of moving sand grains are introduced and the turbulent structure of flow is investigated by laser current meter.
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.
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。
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