摩擦力

航天飞机重返地球大气层时因有摩擦力而减慢速度。

The force of friction slows the spacecraft down as it re-enters the earth 's atmosphere .

活塞上涂了一层石墨以减小摩擦力。

The pistons are graphite-coated to reduce friction .

这种自行车的设计成功地减少了风的阻力和摩擦力。

The design of the bicycle has managed to reduce the effects of wind resistance and drag .

摩擦力作用于运动着的物体，并使其停止。

Friction acts on moving bodies and brings them to a stop .

润滑油能减小摩擦力。

Oil can reduce friction .

但是犯人们总能找到办法弄到。现在他们用牙线慢慢钜金属，抹上牙粉增加摩擦力。

He says they actually use dental floss to slowly saw away at the metal , adding tooth powder to increase the friction .

N取代液晶聚吡咯在摩擦力的作用下还可以诱发单轴取向。

Uniaxial orientation of LC N substituted polypyrrole can be formed by a friction technique .

基于MATLAB的气缸摩擦力补偿与仿真研究

Cylinder friction force compensation and simulation research base on MATLAB

V带传动中附加摩擦力的研究

Research on additive friction in V belt driving

实验结果表明，滑动摩擦力F随测量时间t成非线性上升然后下降。

It is observed that the sliding friction force is nonlinear increase with drag time .

假设V带为轴向移动的梁单元，可模拟V带在轮槽中产生的径向和切向摩擦力。

V-belt is regarded as axial movable beam elements . The radial and the tangential friction forces are simulated .

从理论上分析了黄土遇水后C，ψ值降低的原因（即黄土颗粒之间粘结键和摩擦力大大降低）。

The reasons decreased in C and ψ values are analysed from the loess fabric , mineral material and response mixed with water , that is decreasing of viscous bond and friction resistance .

为了分析万能法轧制H型钢过程中不同接触区内摩擦力分布的规律，利用数值模拟法建立了H型钢的轧制模型。

In order to analyze the rules of friction distribution during universal rolling of H-Beam in different contact zone , rolling model of H-Beam was established using numerical simulation method .

提出一种基于GA的自适应模糊积分型滑模控制策略，并将其用于具有非线性动态摩擦力的单轴运动控制系统中。

An adaptive fuzzy integral type sliding mode control method based on GA was proposed to control single-axis motion control system with nonlinear dynamic friction .

Surface在背面安装了新款的“摩擦力铰链”支架，大家可以根据需求，调整平板电脑的倾斜角度。这比起只有一两个固定视角的前代产品而言是一项改进。

A new " friction-hinge " kickstand on the back of the Surface makes it possible to adjust the tablet 's viewing angle to suit your needs , an improvement over previous versions , which allowed only one or two viewing angles .

结果表明：对于成膜时间较短处于薄膜生长阶段的自组装分子膜，摩擦力随扫描速率的增加而增加，表面粗糙度参数Ra值随着扫描速率的增加而减小；

The results show that the friction force increases and surface roughness parameter Ra decreases with the scanning velocity decreasing for the self-assembled monolayers in the early growing stage .

一方面，MGⅠ能借助疏水部位的疏水键覆盖于表面，维持黏膜湿润，减少咀嚼时的摩擦力，阻止致病菌及潜在有害物质以及酸和蛋白水解酶的入侵，从而保护口腔组织。

MG I maintains the mucous membranes moist , reduces friction during mastication to prevent the invasion of pathogenic bacteria and potentially harmful substances as well as acid and protein hydrolase , thereby protects the oral tissues .

散料G在平面胶带上的摩擦系数f0决定于二者之间的特性，散料在各种槽形胶带间受有侧压力，使得摩擦力增大。

Friction coefficient ( f_0 ) of bulk solids ( G ) on the surface of belt is determined by their characteristics . Lateral forces beared by bulk solids in trough belt make the friction forces in crease .

针对这种情况，本文在经典元胞自动机模型的基础上，量化确定了摩擦力和排斥力的运算规则，提出了一种新的兼顾计算效率与精度的元胞自动机模型CAFE。

Aiming at that , here we introduce a new cellular automata model called CAFE based on traditional models , in which repulsion and friction are modeled quantitatively .

详细讨论了曲率、挠率、Dean数对二次流动、流函数等值线和轴向速度的分布以及壁面摩擦力的影晌。

The effect of curvature , torsion and Dean number on secondary flow , the isoline of stream function , the distribution of axial speed and wall friction is discussed in detail .

并且从根本上解决了PID控制器参数选取难的问题，也从根本上弥补了系统在建模时忽略摩擦力引起的数学模型不准确的缺陷。

And the same time , the difficult question of choosing parameter of the PID controller has been completely solved , the defect , given rise to the neglecting friction causing non-precision of the mathematical model , has been basically compensated .

就微观结构而言，矿物颗粒之间或相互粘结或相互分离，Coulomb准则的粘结力和内摩擦力在局部不能同时存在。

In terms of microscopic textures , mineral particles are either cohesive or separated , and the cohesive force and internal frictional force of the Coulomb criterion cannot exit together locally .

所设计的测力传感器能同时测定正压力和摩擦力，其悬臂由一组相互垂直的平行弹性钢片组成，其解耦特性经有限元软件ANSYS得到证明。

The force sensor is able to measure normal force and friction force simultaneously . The cantilever of force sensor is made up of orthogonal elastic sheet steels whose decoupling characteristics are proved under finite element analysis software ANSYS .

介绍了一种新型的自适应fuzzyPD控制器，并研究了它在气动伺服位置控制系统中应用的适应性问题和非线性摩擦力的补偿方法，提出了一种新的模糊逻辑控制补偿算法。

This paper presents a new adaptive fuzzy-PD controller and researches the adaptability of the fuzzy-PD controller for a pneumatic servo position control system and takes its typical characters into consideration and places a special emphasis on the method of compensation for nonlinear friction .

这意味着，摩擦力在最大值，静摩擦力因数乘以，等于mus乘以，θ，times，mg，times，the，cosine，of，theta。，什么时候会发生？

And so that means that the frictional force is a maximum value possible , N which is the static friction coefficient times N , and therefore that is mu of s mgcos And when will that happen ?

结果表明，采用Mooney-Rivlin非线性有限元本构关系可得到接近实际工况的接触压力和摩擦力；

The results show that Mooney-Rivlin nonlinear finite element model contributes to the calculation of contact pressure and friction ;

对各种对接初始偏差，分别用ADAMS与DDSS进行了大量的仿真研究：（1）考察了接触点处库仑摩擦力对仿真结果的影响；

Numerous simulations are done with different initial docking misalignment by ADAMS software and DDSS : ( 1 ) Influence of the contact Columbus friction to simulation results is inspected ;

基于建立的PCA模型对大量的异常数据进行仿真，利用T~2图和Q图进行故障检测，结合实测的结晶器摩擦力及其均方根图进行分析。

Appling PCA model to analyze a large number of abnormal data and the fault detection is performed by means of the T ~ 2 and Q charts , the MDF and its root-mean-square charts are used to analyze the condition of process .

最后，应用该纳米镊子激光测力系统开展了样品表面形貌扫描、探针与基底间的pull-off力和摩擦力检测的实验研究。

Finally , a series of experiments were completed by using the laser force-measurement system , such as sample surface morphology scanning , probe-substrate pull-off force and friction measurement .

该算法是M.C.有效应力迭代算法计算桩基负摩擦力

The algorithm is an extension of the two-valued cover-most algorithm proposed by M. C. The calculation of negative friction on pile foundation by effective stress iterative method