磨损

This paper design a combined seal in seal material、spraying something on piston rod.

在密封材料上采用1种组合密封，活塞杆采用喷涂处理工艺，减少摩擦副的磨损。

Air-end made in Germany has only two moving parts:the male and female rotors. Contact occurs only on a lubricated pitch line,so wear is virtually eliminated.As a result,the air-end have character of high effciency、light duty、silence and high reliability.

采用德国原装进口主机，主机内只能有阴阳转子两个运动部件，两转子仅通过油膜接触，不磨损；具有高效率、低能耗、低噪声和高可靠性的特点。

It serves a good nature of self lubrication, stand wear and tear, low friction etc.with characteristics of high intensity of metal and good lubricant of plasticization material.

它能提供较好的自润滑、耐磨损、低摩擦等性能，充分发挥了金属的强度和改性塑料的润滑性能。

A printing plate cylinder wear workparts, gap increased as a result of ink.

印版滚筒轴套磨损惨轻，间隙增不小而引起的不朱杠。

For the sake of enhancing the efficiency of gas inlet and outlet, the mathematical model that takes the plentitude coefficient as the target function may be established. In addition, based on the working characteristics of cam mechanism, the surface wear is its main failure mode; the second target function can be accordingly established.

为获得高的进排气效率，可建立以丰满系数为目标函数的数学模型；另外，基于凸轮机构的工作特点，表面磨损是它的主要失效形式，可依此建立第二目标函数。

In serious conditions, the articular cartilage may even wear out or deteriorate and Knee Joint Plica Syndrome may result.

严重甚至会导致关节软骨的磨损与退化，而出现膝关节皱褶病变

This paper briefly analyzes wedge angle and function of wedge angle of the Archimedean out star wheel overrunning clutch, discussing effect of polar angle、roller radius、structure size of the overrunning clutch、wear on wedge angle.

简要分析了阿基米德螺线型外星轮式超越离合器的楔角及楔角函数，并讨论了极角、滚子半径、超越离合器结构尺寸、磨损等因素对楔角的影响。

The paper presented a method of detecting long-range correlation in a signal--detrended fluctuation analysis and applied it to diagnose gear faults. Two key problems, i.e. scaling range and polynomial order of fitted trend, were discussed. Scaling exponent was extracted to be as a detector for diagnosing five types of gear faults, their were normal, spalling, tooth broken, wearing and cracking.

探讨了一种检测非平稳信号中长程相关信息的方法--利用去趋势波动分析（detrended fluctuation analysis，DFA）方法来诊断机械故障，着重研究DFA的尺度范围选择、趋势拟合阶数选择等关键问题，提取尺度指数作为诊断的特征参数，应用于齿轮的正常、剥落、断齿、磨损、裂纹等五种状态诊断，正确率达96％以上。

Keywords polyoxymethylene;polytetrafluoroethylene;kaolin;friction and wear

聚甲醛；聚四氟乙烯；高岭土；摩擦磨损

It was found that wear rates of untreated polytetrafluoroethylene and high density polyethylene rubbing against...

经过表面化学处理后，PTFE的摩擦系数稍有升高，而HDPE的则有所降低。文中还对PTFE的磨损机理进行了讨论。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐