磨损

These characters are not valid in winter, however, when worn Yellow-browed (which is a common winter warbler in Taiwan) becomes very greyish throughout, lacks contrast above and has reduced wing-bars.

然而这些特徵在冬天比较没用，当黄眉柳莺羽毛磨损时整体颜色变得很灰，体上缺乏对比而且翼带也磨损了。

And the strengthening mechanism can be described as follows: WC cemented carbides have interlaced short-clubbed grain, and in the bend strength test, the microcrack generates at WC/WC grain boundary, and may be blocked by interlaced fine-clubbed grains during extending, which induce the intergranular pulling-out. Due to the pulling-out mechanism, fracture-extend energy is greatly expended, thus bend strength is increased. The wear mechanism is groove wear and spalling of WC grains.

热机械合金化合成的WC-Co硬质合金比传统方法制备的同类WC合金具有更高的强度，其机理是：热机械合金化合成的WC合金具有交替排列的短棒状组织，在三点弯曲试验中，微裂纹萌生于WC/WC晶界位置，受到交错排列的短棒状晶粒的阻碍，裂纹扩展以短棒状晶粒的拔出方式进行，极大地消耗了裂纹扩展的能量，从而提高了弯曲强度；合成试样的摩擦磨损过程以犁沟磨损和WC颗粒的剥落为主要特征。

In the test, we use CCD camera to obtain the videos of the well-cutting picks and the worn-cutting picks, then use Matlab to read image and process it, and then use the method of statistics to calculate the average area of the two cutting picks, at last can get the wear rate of cutting picks.

用CCD摄像机获得完好截齿和磨损截齿的视频段，然后用Matlab读取图像并对其处理，利用统计学的方法，快速计算出两个截齿的平均面积，从而得到截齿的磨损率。

It is concluded that the wear volume loss of ceramics Al2O3 is much lest than that of Si3N4 , but the wear volume loss of cast iron against Si3N4 is much lest than that against Al2O3 , and the friction coefficient is very small too .

结果表明：Al2O3陶瓷的磨损体积损失远小于Si3N4的，但灰铸铁与Si3N4配副时的磨损体积损失却大大小于与Al2O3配副时的，其摩擦系数也很小（0.02）。

Pious Jews would not even wear badges or decorations with the cross attached to them, whereas more liberal ones do not hesitate to wear either the Iron Cross as German soldiers, or the Red Cross as members of the Red Cross Society.

虔诚的犹太人将不会磨损，甚至徽章或装饰与两岸关系的重视他们，而更自由的不要犹豫磨损，无论是铁跨作为德国士兵，或红十字会的成员，红十字会。

Test results of film height at several points on sealing area of plane pairs, leakage flow, and frictional torque and so on, show that supply pressure greatly affects lubricating the height and its figuration of film, and that the cylinder block surface wear mainly resulted from destruction of film.

通过平面配流密封带多点实测膜厚、泄漏流量、摩擦转矩的试验数据表明，供油压力对密封带润滑油膜厚度、形态等的影响较大。局部油膜破坏是导致缸体面磨损的主因，试验测得的膜厚分布与其磨损分布有直接关系。

The friction and wear experiments results show that sticking wear takes place during the friction procedure, which results in the poor wear-resisting property of ternary eutectic alloys, due to the low quantity of hard particle of primary phase SnSb; the wear-resisting property of rapidly-solidified Pb-15wt%Sn-15wt%Sb ternary hypereutectic alloys is better than that of as cast ternary hypereutectic alloys.

摩擦磨损实验结果表明，由于三元共晶合金中作为硬质点的初生相SnSb的数量很少，所以在摩擦过程中发生了粘着磨损，导致合金耐磨性能较差；而Pb-15wt%Sn-15wt%Sb三元过共晶合金快速凝固合金的耐磨性能比普通铸态合金的耐磨性能好。

Effect of the expansion rate of contact patch, due to wear of material, on the frictional temperature was analyzed in pure slide of wheel on rail.

结果表明：接触斑材料的磨损速度只影响磨损过程中的温度场分布，其稳态温度场分布基本一致；热载荷随着纵向载荷、蠕滑率以及摩擦系数的增大而增大，进而影响轮轨滚动接触热疲劳。

With this method the copper plating graphite powder was made up in 50% copper content .The silver- copper plating graphite composite was prepared while the silver- copper-graphite composite and the silver-graphite composite were also made up together .The mechanical and electric characteristics of the three kinds of composites were tested and it was found that the copper plating graphite powder can only optimize the properties of the silver matrix composite under the high content of the graphite ,the conductivity and the mechanical property was improved and the material could take higher current in the same carbon content .At 20% carbon content, the resistivity of Ag-graphite composite was 1.67 times as high as that of silver- copper plating graphite composite, the resistivity of Ag-Cu-graphite composite was 3.23 times as high as that of silver- copper plating graphite composite. The bending strength of silver-copper plating graphite composite was 2.17 times as high as that of silver- copper-graphite composite, and the bending strength was 2.11 times as high as that of silver- copper-graphite composite. The wearability of silver- copper plating graphite composite was also enhanced greatly at high carbon content.

利用该方法制备了50%铜含量的镀铜石墨粉，然后进一步制备了一系列相同碳含量的银-石墨复合材料、银-铜-石墨复合材料、银-镀铜石墨复合材料，对三种材料的机械、电气性能进行了综合对比，发现在低碳含量时镀铜石墨粉不能改善复合材料的上述主要性能，而在中高碳含量时则能明显优化复合材料的整体性能，提高了复合材料的电导率，使复合材料在中高碳含量时既具有较高的耐磨性同时也能负载较大的电流，复合材料的机械性能也因镀铜石墨粉的加入而大幅提高，20%碳含量时，银-石墨复合材料的电阻率是银-镀铜石墨复合材料的1.67倍，银-铜-石墨复合材料的电阻率为银-镀铜石墨复合材料的3.23倍，银-镀铜石墨复合材料抗弯强度是银-铜-石墨复合材料的2.17倍，是银-石墨复合材料的2.11倍，同时，在实验给定的条件下，中高碳含量时银-镀铜石墨复合材料的机械磨损耐磨性和通电磨损耐磨性都得以显著提高，银-镀铜石墨复合材料在实验时的接触电压降也更为稳定。

The large drum brake of Nissan diesel technology provides the vehicle with larger brake torque for both service brake and parking brake and ensure driving safety.

引进日产柴技术的大型鼓式制动器，提供更大的行车和驻车制动力矩，保证行驶安全性；前后制动器采用多种规格弹簧制动缸和加长的制动调整臂；凸轮端部安装磨损指示垫片，方便检查磨损；无石棉摩擦材料，环保耐磨。

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