动摩擦

The result of experiments shows that chain-ring overrunning clutch can be competent in those application areas.

实验结果证实，在脉动无级变速、液力变矩器等传统摩擦式超越离合器难以胜任的领域，链环式超越离合器能够满足使用要求。

According to the reasonable boundary condition and simplified equation,adpotes thedynamic pressure supporting method of combined vane with rotatable supporting part to solve thepresent key difficulties which result from the serious rub of highly rotating single-action vane pumps tator internal surface.

根据粘性流体润滑理论的雷诺方程，探讨了采用可摆动支承面的组合式叶片的动压支承方法，解决高速旋转单作用式叶片泵定子内表面摩擦严重的问题，为与原动机同轴同步高速旋转叶片泵机件的研制提供了一种新的设计方法。

The structure shown in the figure : The governing body received direct or roller drying cylinder, as the main components of the rotation; After finishing the outside of the sphere, Bottom Cover and soak spherical carbon graphite seal ring joint seal reliable seal friction deputy, Sealing ring in the spherical shell of its annular space sliding, in addition to oil-free bearings and with the close cooperation of Shell, Rotating connector so that the free support, and therefore do not require a high level of accuracy installed; Spherical seal ring wear, Spring means of pressure at any time in advance to receive compensation, compensation for the shell slowly moved backward, accessible through the tube outside the inscription on the line to observe the seals wear; When steam, Oil flows through the media or other spherical sealing ring and oil-free bearings, the formation of thin liquid film, sealing and lubrication, thereby reducing friction and wear, extending the service life.

其结构如图所示：外管体直接接到辊子或烘筒上，为主要的旋转部件；经过精加工的外管本球面、底盖和浸泡碳石墨球面密封环共同组成密封可靠的动密封磨擦副，球面密封环在其壳体内的环形空间中滑动，加之无油轴承与壳体的密切配合，使旋转接头自由支撑，故对装机精度要求不高；球面密封环磨损后，借助于弹簧的预压力随时得到补偿，补偿时壳体缓缓向后移动，并可通过外管体上的刻线观察到密封件的磨损程度；当蒸汽、油或其它介质流经球面密封环和无油轴承时，形成一层很薄的液膜，提供密封和润滑，从而减轻了摩擦和磨损，延长了使用寿命。

Articular cartilage is a layer of low-friction, load-bearing soft hydrated tissue covering articulating bony ends in diarthrodial joint.

关节软骨是覆盖在动关节骨端表面的一层低摩擦、可承载负荷的水合软组织，其力学性能通过软骨细胞的新陈代谢来维持。

The special tribo-electdc tester with high sliding speed and electric current was developed,which mail working parameters are, current density up to 2.5 A/mm~2, the sliding speed 100 m/s,the load over 500 N (3.2 MPa) and the pulsant strike pressure within 20 N. This testersuccessfully simulates the tribological and electric properties of strip materials. 2, By using the above tester, study on tdbological properties and carrying currentperformances of copper-base powder metallurgy material and metal impregnation carbonmaterial are carded out.

本论文开展的主要研究内容和所取得的成果如下： 1、首次开发了大电流、高速度和重载荷的载流摩擦磨损专用试验机，能够稳定提供恒定交流电流密度2.5 A／mm~2，相对滑动速度100 m／s(12000 r／min)，载荷可达500 N(3.2MPa)，脉动冲击载荷可达20 N，为研究提速接触网和滑板的高速载流摩擦学特性及其机理，以及开发新型高耐磨性、高载流性能滑板材料提供了先进可靠的试验手段(该机已获得一项实用新型专利，ZL 2006 2 0096036.5)。

Hydraulic friction welder has some disadvantages as high energy consuming, pressure pulsation, noising and heating.

液压式摩擦焊机具有能源消耗大、压力脉动、噪声、发热等缺点。

Hot air enters into stirring and crushing and drying chamber from the botton of drier with suitable atomizing speed. It exerts strong shearing, blowing, floating and rotating effect to raw material. Therelore raw material is granulated through centrifuge, sheafing, impacting and friction effect. It strengthens the process of heat exchange.

热空气由入口管以适宜的喷动速度从干燥机底部进入搅拌粉碎干燥室，对物料产生强烈的剪切、吹浮、旋转作用，于是物料受到离心、剪切、碰撞、摩擦而被微粒化，强化了传质传热。

Polar perfluoropolyether lubricant film has been fabricated on single crystal silicon by dip coating technique. The contact angles of distilled water droplet on the single crystal surface and the lubricant film surface were measured with a contact angle meter and the chemical states of C of the film determined with an X ray photoelectron spectrometer.

利用浸涂技术在单晶硅基片上成功地制备出极性全氟聚醚润滑膜，在DF－PM型动－静摩控系数精密测定装置上考察了润滑膜的摩擦特性，并采用接触角测定仪和X射线光电子能谱仪对润滑膜的表面性质和化学状态进行了表征。

When the flow rate through the Poppet head reaches a certain size, balance piston upper and lower chamber of the two oil pressure difference will create upward hydraulic pressure exceeds the spring preload and balanced piston friction and balance the sum of the piston weight and other forces, balance piston upward, so that the pressure port and overflow port interlinked, a large number of pressure from the oil will flow back into the fuel tank from the overflow port.

当通过提动头的流量达到一定大小时，平衡活塞上、下两腔的油压力差将形成向上的液压力超过弹簧的预紧力和平衡活塞的摩擦阻力及平衡活塞自重等力的总和，平衡活塞上移，使压力口和溢流口相通，大量压力油便由溢流口流回油箱。

Now the list type friction clutch quite consummates in thestructural design aspect Uses has axial elastic enhancedthe coupling joint smoothness Clutch driven disk always becomes theChinese dress to have the torque shock absorber, had prevented thetransmission system reverse resonated, reduced the noise andmoves the load.

如今单片干式摩擦离合器在结构设计方面相当完善。采用具有轴向弹性的从动盘，提高了离合器的接合平顺性。离合器从动盘总成中装有扭矩减震器，防止了传动系统的扭转共振，减少了传动系噪声和动载荷。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。