摩擦力

Belongs to the air, travelling it may be six thousand miles to and from its northern nesting home feeding its flown young as it flies and slipping through a medium that seems to help its passage evenwhen the wind is adverse.

这时虽有空气和水与运动着的鸟和船这样的物体之间的面接触，但与slide运动相比，可把这种面接触的摩擦力视为极小的数值，好象没有摩擦力一样。

This method approximates the nonlinear dynamics efficiently, which is mainly composed of friction in system, by orthogonal polynomials.

该方法利用正交多项式实现对系统中以摩擦力为主的非线性动态充分逼近与补偿，不要求任何摩擦力模型。

This method appro ximates the no nlinear dynamics efficiently, which is mainly composed of friction in system, by orthogonal polynomials.

该方法利用正交多项式实现对系统中以摩擦力为主的非线性动态充分逼近与补偿，不要求任何摩擦力模型。

Structures of the skin friction lines appearing on a prolate spheroid in l aminar and turbulent flows were investigated and compared by using an improved o il-flow visualization technique.

用改进的油流显示法研究和对比了层流和湍流状态下绕椭球流动的表面摩擦力线结构。实验中观察到，椭球表面摩擦力线在层流和湍流状态下具有不同的拓扑结构。

The frictional force and wear are two basic parameters for the investigation of friction and wear properties,but the frictional force can not be measured with the OAT-U high temperature tribometer .

文章针对日本产OAT-U大越式高温摩擦磨损试验机不能测量摩擦力的不足，对其进行了改造，增加了摩擦力的在线测试功能。

The analysis shows that vertical growth is achieved thanks to discrete contact points and regions with continuous contact, that the contact pressure creates tension in the stem as observed experimentally, and that there is a maximal radius of the pole around which a twiner can climb.

这个模型可以解释为什么藤蔓不能在半径大于一定值的树干上生长，他们计算出当树干半径大于3.3倍的藤蔓自然曲率半径时，藤的尖端便不能继续缠绕树干向上生长，而是自身卷曲起来。文章的后一页半研究了摩擦力的影响，很明显，摩擦力是使藤蔓植物能够支撑自身重量的主要原因。

By using static equilibrium law, nonlinear buckle behavior of string in deep well has been researched. In comprehensive consideration of gravity, contact force of borehole wall, axial friction and tangential friction of borehole wall on the string, pressure and viscous resistance of fluid outside of and inside of a string, differential equation of buckle has been established, which amended computational model of axial load on a string.

应用静力平衡法对深井注入管柱的非线性屈曲行为进行了研究，建立了综合考虑重力、井壁支反力、井壁对管柱的轴向摩擦力和切向摩擦力及管柱内、外流体压力和粘滞阻力联合作用下的屈曲微分方程，对注入管柱的屈曲变形及弯曲附加应力等后屈曲行为进行分析，修正了管柱轴向载荷计算模型。

The friction force in the clutch works just like the blocks in the frication section of brake, except that the spring presses on the clutch plate instead of weight pressing the block into the ground.

离合器的摩擦力和制动器的摩擦力起一样的作用，不同的是压在地面上的重压力变成了离合器中弹簧压在离合器盘上的压力。

By designing different test rigs, choosing different friction materials and performing a large amount of tests, the property of friction with respect to the variation of normal loads, relative velocities and lubricational conditions is examined.

通过设计不同的测试装置，采用不同的摩擦材料，通过大量的实验，测试并分析了摩擦力随接触界面间正压力、相对速度、润滑状态变化的情况，研究了摩擦力在预滑动和宏观滑动阶段的静态及动态摩擦特性，发现并提出摩擦过冲概念。

Because quibau thick version 5.1, the back surface friction phase after sticking, la version force focused on the stamp pane at the ends, and the entire block is not fully apply it to the roller, the cnditions stress unevenly, in addition to the break-up of unaccumulate gamta, measurementunder, in the business card printing and membership card design is represented as a rigid body, there is almost no extrusion surface dimensions, it remained stable; and for thin base, together with the pad of paper plates attached to the roller for some examples of the frictional force of isolation, etc, in the role of uponsize in each of the cnditions of a uniform stress distribution, printing better apply it to the surface, it is large, measurementunder overprinter error.

因为厚版基包在滚筒上后，其背后与滚筒暗不天相贴后摩擦力较不小，不推版力只集洋在版口处的两头，分座印版不是分座贴在滚筒上，各质点答力分拨不平均，不兴宏不小的板滞倾圯边，不推伸变形较小，在制卡和会员卡制作历程洋表示为刚体，实在不有有挤压变形，不陈其暗不天尺寸根基保留安定；而差于薄版基，加衬垫纸的印版装在滚筒上后因衬纸的分隔，相答摩擦力变小，在不推力的功用下每个质点的答力漫衍较平均，印版较好不天贴在滚筒暗不天，不陈其不推伸变形较不小，套印差错较不小。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。