沙粒

这半透明的石头，其实是沙粒。

These translucent boulders are , in fact , sand grains .

土壤风蚀物中沙粒的动力学特性分析

Analysis of dynamic characteristics of sand grains in wind erosion soil

我假装拭去一只眼睛里的沙粒。

I pretended to rub a fleck of grit from one eye .

过量接触阳光、海水、沙粒和氯气会使浅色头发略呈绿色。

An overdose of sun , sea , sand and chlorine can give lighter hair a green tinge .

含沙粒油润滑条件下镍基Al2O3复合刷镀层的摩擦磨损性能

Wear properties of electro-brush plated nano-al_2o_3 / ni composite coating with sand in oil

该病毒为一种属于沙粒病毒科的单链核糖核酸（RNA）病毒。

The virus is a single-stranded RNA virus belonging to the virus family Arenaviridae .

低风速条件下沙粒起动的PIV研究

P ⅳ investigation of sand incipience under low wind velocity

D值与粘粒和粉粒含量呈正相关关系，与沙粒含量呈负相关关系，相关性均达到极显著水平（P0.01）。

D value has a significant positive correlation with clay and silt content ( P0.01 ), but has a significant negative correlation with sand content ( P0.01 ) .

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。

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 .

研究了李-杨相变理论在沙粒分离的urn模型非平衡系统中的应用。

The Lee-Yang theory is used to study the nonequilibrium phase transitions of an urn model for the separation of sand .

正如蕾切尔·卡森（RachelCarson）1958年写下的那样，在每个蜿蜒的海滩，在每颗沙粒之中，都藏有大地的故事。

As Rachel Carson wrote in 1958 , in every curving beach , in every grain of sand , there is a story of the earth .

经一个潮周期，沙粒向两侧的最大横向扩散距离为20m，最大垂直扩散深度达7cm；

The maximum crosswise spread distance in a tidal cycle was 20m , and the maximum vertical spread depth was 7cm ;

其中发现沙堆模型达到SOC态时的平均沙粒数一直持续在2.09左右，森林火灾模型的火灾分布具有分形树的特点。

The result shows that all these systems are evolving in the form of SOC . In sand-pile model , the average sand number is 2.09 , while in forest model , fire distributions are like fractal trees .

此外，静电力对沙粒运动轨迹的影响要明显大于空气升力，Magnus力的影响主要由沙粒角速度决定，当角速度很小时，其影响可以忽略，当角速度很大时，其影响非常显著。

The influence of Magnus force is determined by the angular speed of particle , therefore when the angular speed is small , the influence can be neglected .

与沙粒组相比，复合组肉鸡的腹脂率显著降低（P＜0.05）。肉鸡胸肌pH、滴水损失、剪切力、b~值和IMP含量在不同处理组间差异均不显著（P＞0.05）。

Comparing to the sand treatments , the Percent of Abdominal Fat in degraded obviously ( P0.05 ) . There were not obviously difference of broiler pectoralis pH , drip loss , shearing force , yellowness , and the content of Inosine Monophosphate between every treatment .

盐沼近底层的悬沙粒径变化与水平流速存在正相关，两季相关系数R2分别为0.77和0.66。

There was a positive correlation between near-bottom suspended sediment particle size and the level velocity in salt marsh . The correlation coefficients R2 of two seasons were respectively 0.77 and 0.66 .

在土壤风蚀研究中，Bagnold建立的干沙子的起动风速与沙粒粒径关系的表达式已被广泛接受。

The widely accepted Bagnold type function to calculate threshold wind velocity or shear velocity was developed for dry sands .

土壤颗粒以粉沙为主，粉沙粒占总量的60%左右，粘粒约占15%左右，容重约为1.2gcm~（-1），试验前将土样风干并过1×1cm的粗筛。

The bulk density was 1.2 g cm-1 . The soil contents about 60 % of silts and about 15 % of clays .

最后，通过多功能环境风洞实验，使用粒子图像测速法（PIV），对不同风速、不同直径输电导线周围的沙粒分布情况进行了实验及分析。

Finally , with multi-function environmental wind tunnel experiment and particle image velocimetry ( PIV ), experiments and analysis on sand distribution around transmission line are carried out under different velocity , different transmission line diameter .

讨论了李杨相变理论在沙粒分离的2-urn模型非平衡系统中的应用。

Lee-Yang theory of phase transitions is applied to a 2-urn model for the separation of sand .

实验范围内沙粒直径＜0.44mm、光照强度为20～45μmol／m／s、添加硝酸钠为氮源有利于发菜细胞在沙粒上生长。

The sand of the diameter littler than 0.44 mm , the illumination intensity of 20 & 45 μ mol / m / s and adding sodium nitrate as nitrogen source could promote the growth of cells cultured on the sand .

本文将李&杨平衡相变理论推广于研究沙粒分离的urn模型非平衡相变和一维横场各向异性XY模型量子相变。

The Yang-Lee theory of equilibrium phase transitions is generalized to study the non-equilibrium phase transitions of an urn model for the separation of sand and the quantum phase transitions of one-dimensional anisotropic XY quantum spin chain in a transverse field .

运用颗粒流体二相流的随机行走扩散模型（DRW）研究了紊流风场下起跳沙粒的运动轨迹特性。

A discrete random walk dispersion model is applied to study the trajectory characteristics of jumped sand particles in turbulent air flow in this paper .

结果表明：近地表0.1m处收集到的沙尘物质主要来自于近地表跃移的沙粒，随着高度的增加，降尘中细沙成分越来越少，粉沙成分越来越大。

The results are as follows : the falling sand-dust of 0.1 m height near surface is mainly from saltation matter , the fine sand compositions of falling dust are fewer and the powder sand elements are more .

结论20MHz超高频超声对乳腺内小病变的检查具有重要价值，特别是在乳腺导管内乳头状瘤或癌伴乳腺导管扩张、乳腺肿块内沙粒状钙化灶的检查中具有重要特征。

Conclusion 20 MHz high frequency sonography has great value in the visibility of breast mass , particularly in breast intraductal papilloma or carcinoma with duct dilatation and micro-calcification of breast mass .

本论文发挥交叉学科的优势，采用气固两相流体力学理论和PTV测量技术研究这一现象，从新的角度认识沙粒起动和风沙流结构，为风沙流动的研究打开了新的思路。

Our research depends on the advantage of cross-knowledge and makes a research on this subject by Gas-Solid Hydromechanics theory and PTV measure technology . Our research tries to understand sand incipience and wind-sand flow structure , find a new way to research the wind-blown-sand flow .

沙粒斜碰的动力特性分析

Analysis on dynamic characteristics of the inclined impact between sand particles

结果表明，施加有机物料能明显降低风沙土中沙粒的含量，提高粘粒和物理性粘粒含量。

The result showed that the content of sand was decreased ;

风沙运动的沙粒带电机理及其影响的研究进展

Advances in investigation on electrification of wind-blown sands and its effects

风成沙粒度特征对其风蚀可蚀性的影响

Wind Erodibility of Aeolian Sand as Influenced by Grain size Parameters