查询词典 friction coefficient

To enhance weaving efficiency and product quality,the friction of warp in weaving was analyzed,and the analyses shows that the influence on weaving of the warp friction between back shed and before stop rod was more.

为了进一步提高织机的织造效率及产品质量水平，通过分析织造过程中经纱承受的摩擦，认为梭口后部停经架前经纱与经纱间的摩擦对织造的影响最大。

The influence factors of ball screw pair friction moment are analyzed, and a method to measure the friction moment is given.

分析滚珠丝杠副摩擦力矩的影响因素，并给出一种测量摩擦力矩的方法。

Oil is a lubricant . It is used to reduce the friction between two surfaces. Think about the chain on your bicycle. If there were no oil on it, then the cog and the chain would be subject to much more friction. The bike would be very hard to pedal.

油是一种润滑剂，可以减少两物体表面的摩擦力；想想你脚踏车上的链条，如果上面没有润滑油，齿轮和链条间会产生很大的摩擦力，脚踏车就不好踩了。

The development of the design of landing gear brake is discussed. Here the object is disc style brake system. With the research of the friction material, the theoretic arithmetic of the design of brake system contain can be educed, as well as the thermal load and the friction couple.

本文讨论了刹车装置设计的发展，选择盘式刹车作为研究对象，通过对摩擦材料的研究，掌握了刹车装置的容腔估算、热载计算和摩擦偶设计方面的计算方法和理论准则。

The friction and wear behaviors of calcium sulphate whiskers modified bismaleimide resin under different friction load,coupling agent,and whisker content were investigated.

中文文摘］研究了载荷、偶联剂及硫酸钙晶须用量对双马来酰亚胺树脂摩擦磨损性能的影响及材料的磨损机制。

Professional operating various lathes, drilling machine, combination machine tool, milling machine, boring machine, planer, slotting machine, grinding machine, broaching machine, sawing machine, machine tool accessories, machine tool accessories, machine tool hydraulic parts, pneumatic components, ball screw, friction plate, chuck , card claw, various fixtures, cooling pumps, gear pumps, vane pump, variable pump, all kinds of machine friction plate, oil cups, glib, butter cups, oil cups, flat belts, ribbed belts, timing belt, the center frame, with the tool carrier, dividing head, legislative milling head, all kinds of commonly used air hammer parts, forging machine tool parts, punch parts, adjust the various specifications Sizing Block, V-frame, flat panel.

专业经营各种车床、钻床、组合机床、铣床、镗床、刨床、插床、磨床、拉床、锯床，机床配件、机床附件、机床液压件、气动元件、滚珠丝杆、摩擦片、卡盘、卡爪、各种夹具、冷却油泵、齿轮泵、叶片泵、变量泵、各种机床摩擦片、油杯、油嘴、黄油杯、机油杯、平皮带、多楔带、同步带、中心架、跟刀架、分度头、立铣头，各种气锤常用件、锻压机床配件、冲床配件、各种规格调整垫铁、V型架、平板。

The preparative technique of solid lubricant is cold-press sintering method.The micro-structure , friction surface, lubricant transfer film surface of base material was characterized by SEM; XRD was used to do phase analysis. The degrees of crystallinity of pure PTFE under the different conditions of water cooling, air cooling and furnace-varying cooling were made comparison by XRD. The thermal stability of pure PTFE and solid lubricant was analyzed by DSC-TG; The composition and valence state of elements in the surface of carbon fiber ,solid lubricant before and after friction test and lubricant transfer film were characterized by XPS; The frictional property of solid lubricant was tested by pin and disk test rig .

用SEM表征原料微观结构、摩擦表面及润滑转移膜表面形貌：用XRD进行原料物相分析，及比较水冷却、空气冷却、随炉冷却三种工艺条件下的纯聚四氟乙烯树脂的结晶度；用DSC-TG分析纯聚四氟乙烯树脂及固体润滑剂的热稳定性；用XPS表征碳纤维表面、固体润滑剂摩擦前后表面、润滑转移膜表面的元素组成、价态变化；用销盘式摩擦磨损试验机对固体润滑剂进行摩擦性能测试；采用专用的台架模拟试验机对固体润滑剂镶嵌轴承套与钢轴摩擦副间的摩擦磨损性能进行测定；用莱次偏光显微镜测试固体润滑剂的硬度；用材料试验机测试固体润滑剂的抗压强度等。

The standard workpiece of the ring compression test by Lee and Altan will be used in this report. The specimen will first annealed to eliminate the internal stress and then through different ways of machining to produce different roughness of surface and different direction of machining marks. The ring compression test with various lubricants and dry friction were carried out at room temperature. The experiment results were drawn on the diagram of friction factor developed by Lee and Altan to compare the influence of the roughness of surface to plastic forming with or without lubricants.

实验将依Lee and Altan压环试验所用之标准压环试片进行，实验试片先经退火处理消除内应力，再将试片以各种不同之加工方式制作成具有不同的表面粗糙度，与不同刀痕方向之摩擦面，再於常温环境下实施乾摩擦与添加不同润滑剂之压环试验，将实验结果所得之数据绘制於Lee and Altan之定剪摩擦系数图中，以比较其不同表面粗糙度对塑性成形之影响，同时也说明在各种不同表面粗糙度下添加各种润滑剂对成形之影响。

Oil-soluble Ag2S nanoparticles surface-modified by dialkyldithiophosphate were prepared by chemical synthesis.The synthesized Ag2S nanoparticles were characterized by transmission electron microscopy,X-ray powder diffraction spectroscope and UV-vis spectrophotometer.The friction and wear tests were carried out by a DF-PM dynamic and static friction tester.

在水醇混合介质中，采用同阳离子共沉淀法合成了有机化合物表面修饰的Ag2S纳米微粒，在高速钢基底上制备成膜，研究了它的摩擦学特性。

During friction, the bondings between DDP and the surface of nanoaprticles break, as a result, the DDP and nanocore adsorb competitively and form a composite film on the friction surface.

在摩擦过程中，DDP和纳米微粒界面的键合断裂，DDP和纳米微粒在摩擦表面竞争吸附并形成复合边界润滑膜。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044