描述

Aiming at disjunction of microcosmic researches and macroscopical researches and status quo of theory basis researches of Aeolian sand movement near the sand bed, based on plenty of experiment data in wind tunnel, this thesis studies some microcosmic researches including the number of lift-off sand grains percent time percent sand bed area and relative movement parameters of saltating sand grains by combined methods of mechanical and statistical mechanical theories. Then, this thesis develops in advance a relation between the microcosmic researches and macroscopical researches in order to describe truly the theory model of some macroscopical physical variable of Aeolian sand movement.

本文针对当前风沙运动微观与宏观研究相脱节、准确描述近地面风沙运动规律的理论基础薄弱的现状，基于大量风洞实验数据，通过对沙床面单位时间单位面积起跳沙粒数、沙粒跃移运动过程中相关参数等微观问题的研究，力图建立风沙运动微观与宏观研究的联系桥梁，以期能够准确描述风沙运动宏观量变化的理论模型。

This article aims to explore the basic principles and methods in writing online learning resources. It is divided into four parts. The first part introduces the characteristics and significance of online learning resources. The second part elaborates the basic principles in terms of choice, writing, organization, layout, presentation of the learning content. The third part describes how to write online learning resources including use of language, rubrics and graphics, etc. The fourth part describes the uses of the principles through a case study.

本文的目的是介绍和探讨网上学习材料撰写的基本原理和方法，文章分为四个部分：第一部分说明网上学习材料撰写的特点和重要性；第二部分阐述网上学习材料撰写的基本原理，从学习内容的编排、学习内容的撰写、学习内容的选择、学习内容的组织、学习内容的呈现五个方面进行了分析；第三部分描述网上学习材料撰写的方法，包括语言使用、动词使用、图表使用等；第四部分通过案例，描述网上学习材料撰写的原理和方法的实际应用。

In this paper a further study of the algebraic properties of the language will be presented and the digital system will be optimized by program transformation. In this way, we can get a correct and optimized logic structure which has no redundancy and reuses each common component to the great extent.

本文将在此基础上，进一步研究函数或硬件描述语言的代数性质并通过程序变换对所描述的电路进行综合和优化，从而设计出正确的优化逻辑结构，在这种逻辑结构中去除了冗余，最大限度地重复使用各个子部件。

Three, based on Marx and Engle's point on historical process of transformation, it discusses the historical process of form of average rate of profit.

在马克思、恩格斯对转形历史过程描述基础上，对利润率平均化的历史过程进行描述。

There's no one word to describe its beauty and pizzazz.

没有哪一种语言可以描述她的美丽，没有哪一种语言，可以描述她的潇洒。

The error of a surface on the electrical potential distribution can be neglected when the order of the distance which from center to the surface we assume the potential decay to zero about 102 of its radius. This effect also can be neglected when the potential is high, but it can be taken into account by multiplying a correction function to the potential of surface when the surface potential is low.

并且当表面电位较高的时候，近似解析解对於空间电位的分布会有较好的描述，即和数值解的结果会有较少的误差；而在表面电位较低的情况下，圆柱座标以及球座标的近似解可以乘上一个校正函数来修正，则可以有效的大幅降低误差，更可以正确的描述胶体粒子内部的空间电位分布。

Within the active periods, recurrence interval distribution has relatively large discretion, and can be well-fitted by a Weibull distribution. While the duration's distribution of the quiet periods has relatively small discretion, and can be described approximately by some distributions as the normal and so on.

其中，活跃期内地震复发间隔分布的离散性较大，可用Weibull分布近似描述；而平静期的持续时间分布的离散性较小，可用正态等分布近似描述。

In an admirable error bound, the numerical simulation had the close results with experiment by the characteristic curve of cold mass flow fraction, as well as Thermodynamics model of vortex tube, So Thermodynamic theory hypothesis was available to explain Ranque-Hilsch effect of vortex tube.

在误差允许的范围内，涡流管冷流率特征曲线描述的结果与涡流管热力学理论给出的结果非常相近，说明涡流管热力学理论假设能够描述Ranque-Hilsch效应。

It is the two-word description of an organism based on its physical appearance: the genus name and the descriptor.

根据物体的机能可以用两个单词来描述一个有机体：基因名和描述名。

An advanced combined turbulent lubrication model is proposed: low turbulence Reynolds number k-e model is used to describe the flow in the near-wall regions, and algebraic Reynolds stress model is used to describe the flow in the turbulence kernel, with flow continuity kept between the two models and transition criterion set to fit Leutheusser's measurements.

提出了先进的复合型紊流润滑理论：以低紊流雷诺数k-e模式描述近壁区内的流场，而以代数雷诺应力模式描述紊流核心区内的流场，二区间流场连续过渡，并依据Leutheusser实验结果设定过渡准则。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。