基本力

According to the principle of mechanics, with the consideration of the gravities of coal dust particles and liquid droplets, coal dust size and humidity, under the condition of force balance when the coal dust was raised, the authors obtained a theoretical formula for the threshold velocity of coal dust with humidity.

作者根据力学的基本原理，考虑颗粒和液滴重力、煤粉颗粒尺寸和湿度的影响，利用煤粉颗粒起动时的力平衡条件，推导出在风的作用下，具有一定湿度的煤粉颗粒开始扬起的起动风速的理论表达式。

Strong interaction effects on the force between hadrons, is the four known fundamental forces of the universe, the strongest, is the role of the shortest distance about 10 ^ (-15 ~ 10 ^ (-10) m range.

强相互作用是作用于强子之间的力，是目前所知的四种宇宙间基本作用力最强的，也是作用距离最短的（大约在10^(-15)～10^(-10) m 范围内）。

It proposes that the cohesive force between lexical items is determined by their relatedness both in vocabulary and in the text, that the cohesive scope of lexical items is usually larger than that of grammatical items,and that,so far as lexical cohesion is concerned, all forms of a lexeme have the same cohesive value as the base word.

指出：词项之间的衔接力是由它们在意义上和篇章中的接近程度决定的；就衔接范围而言，词汇衔接手段比语法衔接手段大；在词汇衔接中，同一词根的派生词衔接作用基本相同。词汇衔接关系是篇章构成的重要一环，它往往反映出篇章语义层上的事件线和参与者线，同时也揭示出篇章的主题。

Between this paper and to strengthen strength characteristic between position and original common working effect of structure carry on scientific analysis ruggedized construction, have expounded calculating the working routine that assumed and thestructure strengthened basically of ruggedized construction, then introduced the detailed one to the reinforcement technology of the reinforced concrete structure, have proposed to strengthen the scheme optimum seeking decision method, namely the decision method of fuzzy optimum seeking based on theory of the fuzzy set.

本文对加固结构的受力特征以及加固部位与原结构的共同工作效应进行科学的分析，阐明了加固结构的基本计算假定及结构加固的工作程序，然后对钢筋混凝土结构的加固技术进行了详细的介绍，并提出了加固方案的优选决策方法，即基于模糊集理论的模糊优选决策方法。

Based on the existent theories and methods, the author further probes on the principles, and the polestars and the contents of the systematic evaluation, creates a theory-index system supported by performance of urban tourism, potential competitive power and supporting power of tourism environment. AHP method is selected as a key method to evaluate competitive power of urban tourism. The fifth part is a case study.

在总结前人评价理论和方法的基础上，探讨了城市旅游竞争力系统评价的基本原则、指导思想和内容，并从城市旅游竞争业绩、城市旅游竞争潜力和城市旅游环境支持力三个方面构建了一套评价指标体系，选取了层次分析法作为评价城市旅游竞争力的主要方法。

The pedrails moving system are chosen as the moving mechanical of the climbing robot for pressure vessel.

本文设计的压力容器检测爬壁机器人采用履带式移动机构，双履带构成爬壁机器人的基本框架；采用永磁吸附方式，将永磁片贴在履带的外表面，可提供足够大的吸附力，结构简单；采用前轮驱动，两个驱动轮分别由电机驱动，当两电动机转速一致时，机器人沿直线行走，当两电动机差速时，可实现爬壁机器人整体转弯。

Magnet, which can offer adsorbability enough to keep the robot working on the vertical walls, is kept close to the outside surface of the pedrails. Front-wheel driving is adopted as the driving system and the two front-wheel are drived by two elctromotors, respectively. When the two motors are running with the same direction, the robot walks straightly. When the two motors are running with the contrary velocity, the robot can swerve.

本文设计的压力容器检测爬壁机器人采用履带式移动机构，双履带构成爬壁机器人的基本框架；采用永磁吸附方式，将永磁片贴在履带的外表面，可提供足够大的吸附力，结构简单；采用前轮驱动，两个驱动轮分别由电机驱动，当两电动机转速一致时，机器人沿直线行走，当两电动机差速时，可实现爬壁机器人整体转弯。

In this paper, the principle and formulas to evaluate the stability of slopes with ground water are introduced,the equilibriumfunctions of element have been derived consideringthe influence of the pore pressure, and the formulas of water pressure on boundaries of element are also discussed.

摘 要：讨论了地下水作用边坡稳定性分析的运动单元法基本原理与公式，推导了有孔隙水压力影响的单元静力平衡方程和单元边界水压力的计算式。

Basic characteristics of cosine transform spectrum were analyzed, where contour lines of 2D cosine transform of point mass present the shape of a quarter of concentric circles and the number of counter become small along with the increasing of wave numbers. The spectrum of vertical rectangularcylinder put up periodic zero counters which mark off quadrate areas, the values of counter in each areas alternately change between the plus and the minus, and with the increasing of wave number, the values of counter present attenuation character alike e exponent.

分析了点质量和直立矩形柱体重力异常余弦变换谱的基本特征：点质量二维余弦变换谱等值线呈1/4同心圆形状，等值线随着波数的增大而变稀；直立矩形柱体谱出现了周期性变化的零等值线，该等值线将非零等值线划分为a×b个矩形区域，而且等值线值在各矩形型区域中正负交替变化，随着波数的增大，不同的矩型域中等值线值呈e指数衰减特征。

The present paper describes the implementation of and experiments on a new three axis tactile sensor applying an optical wave guide plate.

本文阐述了一种新的光波导型三向力触觉传感器的工作原理和基本结构，并设计了实验系统。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。