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。
The Weatherford STP helps you reduce sand damage by moving sand upward through the pump and away from the barrel/plunger interface.
STP可使砂粒向上移动，远离泵筒和泵塞泵接触面，从而减少砂粒引发的磨损。
The analysis to sandy desertification land types shows that the moving sand dune decreases, semi-fixed sand dune and fixed sand dune increase.
从沙化土地类型上分析，流动沙地面积减少，半固定、固定沙地面积增加。
Water in the sand between the two POTS evaporates through the surface of the larger pot, where drier outside air is moving.
两个罐子中间沙子的水分通过大罐的表面蒸发，使大罐外部的干燥空气开始流动。
Like a line in the sand, an absolute poverty standard shows whether the economic tide is moving in or out. It does not matter too much where on the beach it is drawn.
就像在沙滩上划线，绝对贫困标准显示经济潮流是进是退，和这条线划在沙滩的哪里没有太大的关系。
Now, a new project by Rotterdam-based HUNK-design in cooperation with IDEddy is offering cities an alternative to moving large amounts of sand.
现在，一项IDEddy参与合作的大设计将提供给城市居民们另一种选择，避免运送大量的沙子，这项工程的基地在鹿特丹。
In the distance half a dozen sand-spouts, swiftly-moving white pillars, looking like desert genii with too much "tanglefoot" aboard, were careering about in every direction.
十几个沙丘的距离之外，飞速移动的白柱像喝多了酒的沙漠魔鬼一样，横冲直撞。
The others just laughed, but the two boys began to move away more of the sand. Soon they could see that there really was something moving in the hole.
别的孩子只是笑，可那两个男孩开始挖开更多的沙子。很快他们就能看见洞里真有个东西在动。
Water in the sand between the two POTS evaporates through the surface of the larger pot, where drier outside air is moving.
两罐之间的沙子中的水分经由大罐的表面蒸发，使大罐外部的干燥空气开始流动。
The moving of the sand resulted in a 10 - to 30 - times increase in the amount of Mycoplasma recovered from the pile for several weeks following the move.
沙子的移动导致了移动后的数周之内沙堆中的支原体数量增加10到30倍。
Stress distribution and moving characteristics are obtained through simulation when the wheel contacts with sand. The validity of simulation model is verified by experiments.
通过仿真得到车轮与沙土颗粒接触时的应力分布关系，以及运动特性关系，并通过实验验证仿真模型的正确性。
'they must be the original real-life Rolling Stones, they just keep moving through the sand and I don't believe anyone has really 100 per cent worked it out yet.
所说的‘滚石’最初指的一定就是它们。这些石块一直在沙地上移动，我不相信任何人能够100%地揭开这个谜团。
Sometimes they are also called sand seas because the dunes look and act like very slowly moving ocean waves.
有的时候它们也叫做沙海域因为沙丘看来举止像非常缓慢移动的海浪。
In this paper, the method is applied to compute the transport of suspended sediment. A new sand transport equation which can simulate the moving boundary is founded using the slot method.
本文将窄缝法应用于悬沙输运数值计算中，推导出了考虑窄缝时的泥沙输运方程，建立了一种具有动边界功能的泥沙输运模型。
I remember staring at this empty ant farm, noticing one last ant still inside still moving little grains of sand.
我记得，我凝视着这个空的蚂蚁农场，注意到还有最后一只蚂蚁在里面，依然搬运着不多的细沙。
The desert-crossing highway was built on the drifting sand dunes in kubuqi desert where aeolian sand hitting and sand dune moving were the main damage for the highway.
库布齐穿沙公路修建在库布齐沙漠高大的流动沙丘区，风沙流侵袭与沙丘整体前移埋压公路是主要沙害形式。
The instantaneous moving mode of sand mass is divided into 4 types, namely: rolling, jumping, suspending, and running away, when the wind speed reaches the threshold velocity of sand-driving wind.
文章研究将沙粒在风速达到沙粒的起动风速时沙粒的瞬间起动方式分为4种，即：滚动、跳跃、悬浮和飞扬4种。
Trees can stop the wind from blowing the earth away. They can also prevent the sand from moving toward the rich land.
树可以防止风把泥土吹走，也可以阻止风沙吹进良田。
The Great Green Wall will stop the sand from moving towards the rich farmland in the south.
绿色长城将阻止沙子移向南方肥沃的农田。
The Great Green Wall stops the sand from moving to the rich land in the south.
绿色长城阻止了风沙吹向南方肥沃的田地。
It is difficult to determine the effects of straw-break surface on the structure of drifting sand current and the wind speed profile in the sand-moving region due to the complexity of straw-breaks.
由于草方格构成的下垫面复杂多变，其对风沙流结构与风沙活动层风速廓线的影响很难确定。
It is difficult to determine the effects of straw-break surface on the structure of drifting sand current and the wind speed profile in the sand-moving region due to the complexity of straw-breaks.
由于草方格构成的下垫面复杂多变，其对风沙流结构与风沙活动层风速廓线的影响很难确定。
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