Influences of different duration of oscillation,pH value,initial concentration of uranyl ion and particle size of sand on adsorption of uranyl ion on sand were studied.
应用简单土壤类似物——沙粒,模拟UO22+污染土壤的过程,研究不同振荡时间、不同pH值介质、不同初始ρ(UO22+)及粒径条件对UO22+吸附的影响。
The equilibrium sand transport is simulated by Lagrange model combined with the probabilistic distributions of initial speed and angle of ejection sand grain in this paper.
本文用Lagrange方法结合起跳沙粒初始运动状态分布模拟了稳态风沙输运过程。
In order to study the impacts of sand on the airplane engine blades, a theoretic model of permanent notch and rebound coefficient is established by simulating engine blades with transversely isotropic material.
研究沙粒与飞机发动机叶片的冲击碰撞,并将飞机发动机叶片模拟为横观各向同性材料,建立了横观各向同性叶片受沙粒垂直冲击碰撞时产生的永久性凹坑深度和反弹系数的解析表达式。
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 .
Influence of Total Sand Transport Rates on the Vertical Distribution of Different Sand Grain Sizes in Wind-sand Flow on the Coastal Dune
输沙量对海岸沙丘表面风沙流中不同粒径沙粒垂向分布的影响
There are grains of sand beyond number on the ground.
地上有数不清的沙粒。
numberless stars, bacteria, grains of sand
无数的星星、 细菌、 沙粒.
Vertical distribution models of sand transport rate of different grain size groups in coastal aeolian mass flux
海岸风沙流中不同粒径组沙粒的垂向分布模式
Distribution of Initial Velocity of Lift-off Sand Particles in Aeolian Saltation
风沙流中沙粒起跳初速度分布的探讨
The Influence of the Particles mid-air Collision on Wind-blown Sand Saltation;
沙粒空中碰撞对风沙跃移运动的影响
ON THE SPLASH FUNCTION OF EQUILIBRIUM AEOLIAN SEDIMENT TRANSPORT
风沙稳定输运中起跳沙粒运动状态分布函数
The sands are running out.
沙漏中的沙粒即将漏尽；寿命将尽，馀时不多。
Experimental Research On Sand Incipience Law in Wind-Blown-Sand Two Phase Flow;
风沙两相流中沙粒起动规律的实验研究
Wind tunnel simulation of the threshold wind velocity in the lee-side of transverse dunes;
横向沙丘背风侧沙粒风蚀起动的风洞模拟
A Mathematic Model of High-altitude movement for the Micro dust Granularity in the Dust Storm
关于沙尘暴沙粒在高空运动的数学模型及分析
The particles are so small that there are more of them in a grain of sand than there are grains of sand on a large beach.
这种微粒是如此的小，以致在一个沙粒中微粒的数目比一个大海滩上沙粒的数目还多。
Analyse of Aeolian Sandy Fluidness on Dune Surface-A Case Study in North Sandy Land of Beijing
沙丘表面的沙粒流动性分析——以北京北郊沙地为例
Each microdot is the size of a grain of sand and contains an identifier.
每颗微粒都是一粒沙粒的大小并且包含一个辨识码。
There is a grain of sand in his eye.
他眼里有一粒沙子。
As a drop of water unto the sea, and a gravestone in comparison of the sand; so is a thousand year to the day of eternity.
千年对于永恒，如同大海一滴水，沙滩一粒沙。
A STUDY ON GRAIN-SIZE FEATURES OF SAND MATERIAL OF THE OASES IN THE SOUTHERN MARGIN OF THE TAKLIMAKAN DESERT
塔克拉玛干沙漠南缘绿洲沙物质粒度特征