Study on laws of wind-blown sand movement and plant function mechanism is an important part of desert research.
风沙运动规律以及对植物作用机理的研究是沙漠学探究的重要组成部分。
Water transportation and sand movement characters in the shaft double layer culvert are studied in this article.
试验研究了废黄河竖井双层涵洞输送水流和泥沙运动特性。
The nature of sand movement depends on the particle size, shape, and specific gravity in respect to the associated velocity and turbulence.
泥沙运动的性质取决于颗粒的大小、形状和比重并与流速和紊动有关。
Research on the processes of wind erosion of cropland, desertification of grassland, reactivation of fixed dunes and shifting sand movement reveals th...
并论述了农田风蚀、草场沙化、固定沙丘活化及流沙前移等主要类型土地沙漠化的发育过程。
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。
Local scour on bridge pier caused by the sand movement is based on turbulence, understanding the turbulence characteristics in-depth can better raise awareness of local scour on bridge piers.
引起桥墩局部冲刷的泥沙运动是以水流脉动为基础的，只有深入地了解水流的脉动特性，才能更好地提高对桥墩局部冲刷的认识。
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。
Sand wave movement is an important form of sediment movement for alluvial rivers and has a great effect on stream resistance.
沙波运动是冲积河流泥沙运动的一种重要形式。沙波的消长对河道水流的阻力损失有很大的影响。
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。
Consolidated sand, caused by the movement of sand wave and longitudinal dune, is a silting phenomenon takes place in backflow zone of Hanjiang Reservoir.
铁板沙是汉江库区变动回水区的一种泥沙淤积现象，是沙浪、沙垄运动的产物。
In the bedload movement process, coarse sand tended to stay on the sand bar, find sand was brought away.
底沙运动过程中粗粒沙滞留在沙洲，细粒沙被搬走。
This paper studies a cone with leaking as a pendulum and the period of its sand leaking movement and gives out the period changing rule of the variable mass pendulum.
本文以一个载满沙子的圆锥表漏斗作为单摆，研究沙子漏出过程的运动周期，从而给出此时变质量单摆的周期变化规律。
Many natural phenomena and natural disasters have close relation with granular materials avalanche, i. e. sand dune development and movement, debris flow, snowslide and earthquake.
沙丘发育和前移、泥石流、雪崩、地震等诸多自然现象和自然灾害都与颗粒物质的崩塌有着紧密的联系。
The box adopts annealing or movement to eliminate stress, reduce deformation and ensure quality. The surface is subject to sand blasting to achieve elegant appearance.
箱体采用退火或移动消除应力，减少变形，从而保证质量，表面采用喷砂处理，从而使外观美观大方。
Two-fluid large eddy turbulence model is applied to research the movement of the sand clouds in quiescent water.
本文采用双流体大涡紊流模型对静水中泥沙云团下落过程进行了研究。
Mud and sand accumulation and earth crust movement, which induces lake basin evolving continuously, make lake water level go up or down.
泥沙淤积和地壳运动使湖盆不断演化，导致水位不断升降。
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。
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 movement of light oil(gasoline and kerosene)in subsurface homogeneous water saturated zone and water unsaturated zone were simulated in a two-dimensional sand trough model.
在二维砂槽模型中模拟了轻质油在均匀多孔介质地下水非饱和区和饱和区中的运移过程。
Develops sand administers methods, policies and procedures directed at ensuring the efficient and economical movement of material through the plant.
按公司政策和流程来管理物料，并确保物料在工厂的正常运作。赼。
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。
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。
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