磨损

The results showed that electroless Ni-P coating appear mainly delaminate wear and lightly abrasive wear under unlubricated wear.

结果表明：化学镀Ni-P合金在无润滑磨损条件下的磨损机理主要为剥层磨损，并伴随少量磨粒磨损。

As the results, both the friction and wear are much lower in n-monohydric alcohols than in water; in ethanol, the friction and wear increase rapidly when a small amount of water was blended into the lubricant; the friction and wear decrease slightly with increasing the chain length in n-alcohols; in polyhydric alcohols, the increase of the hydroxyl number greatly reduces the friction and wear.

研究结果表明，陶瓷在醇中的摩擦和磨损均比水中低；在乙醇中加入少量水可明显增大其摩擦和磨损；随着一元醇分子链长的增加，其摩擦磨损略有降低；多元醇中羟基数目越多，其摩擦磨损越低。

Secund abrasion is main format of abrasion about double-front-axle steering automobile and is different from secund abrasion caused by the parameter matching of the wheel location improperly.

双前轴转向汽车轮胎磨损的主要形式是偏磨损，这种偏磨损有别于车轮定位参数匹配不当时引起的偏磨损。

1Tooth wear was a common phenomena.The degree of tooth wear increased with age.2The tooth wear scores in men were higher than those in women.3Tooth wear was related with biting habit and subfunctional movement.

①牙齿磨损在成年人群中相当常见，磨损程度随年龄的增长呈上升趋势；②男性牙齿磨损发生率高于女性；③牙齿磨损与个人的饮食习惯、副功能运动等有一定联系。

Results show that the wear rate of O'-Sialon-ZrO2-SiC is much less than that of stainless steel at the testing condition, and main wear mechanism of the unlubricated friction is adhesive wear .

研究表明，在实验条件下，O′－Sialon－ZrO2－SiC复合材料的磨损率远低于不锈钢的磨损率，O′-Sialon-ZrO2－SiC／不锈钢摩擦副间的磨损机制主要是粘着磨损。

The wear surface morphologies showed that the mechanism of the 45 steel was micro-cutting and plastic deformations, and the mechanism of high chromium cast iron was micro-cutting of matrix structure and desquamating of carbide particles under the sand slurry wear condition.

对于象45钢这类较软的材料，在泥沙磨损条件下，材料的磨损机理主要是显微切削和多次塑性变形。对于含有较多高硬度碳化物质点的高铬铸铁类材料，在泥沙磨损条件下，材料的磨损机理主要是基体组织的显微切削和碳化物颗粒的脱落。

The friction and wear characteristics of aluminum-stainless steel composite conductor rail and collector shoe used in metro power supply were investigated on the rig with an electrical current applied across the sliding interface.

通过对销-盘摩擦磨损试验机的夹具和控制部分进行改进，研制出载流摩擦磨损试验装置，并采用该装置研究了地铁钢铝复合式第三轨与受电靴摩擦副之间的载流摩擦磨损特性，采用激光三维共焦扫描显微镜和电子能谱仪等微观手段，结合电接触理论分析了摩擦副的载流摩擦磨损机制。

However, whether the degree of tooth wear has something to do with tooth microstructure, how specific occlusal factors affect the development of tooth wear, and what kind of relationship exists between tooth wear and bruxism or TMD, all these are not clear yet.

作为磨损发生的主体，牙齿的内部结构与磨损程度之间是否存在一定的关系，牙齿所构成的特定的个体咬合因素及其生物学力学特征会对磨损产生何种影响，口颌系统两大功能紊乱性疾病——磨牙症、TMD与磨损之间存在何种关系，均尚不清楚。

The results show that in the applied load range of 10250 N, the mass loss rate of coated AZ91D alloy can be identified to three stages, which are related with whether the coating is worn out. Abrasion is the main mechanism for the coated alloy. The friction coefficient of the coated alloy during sliding wear appears oscillation before it reaches a constant value, which is close to the μ value of the matrix alloy. The mass loss rate of coated alloy increases slightly with increasing applied load when the applied load is more than 150 N because of high plastic deformation accommodation on the matrix alloy surface.

结果表明：根据载荷大小，涂层处理后AZ91D镁合金的磨损行为明显分为3个阶段，这些阶段同陶瓷层是否磨穿密切相关；微弧氧化涂层AZ91D镁合金的磨损机理主要是磨粒磨损；受表面状况的影响，陶瓷涂层的摩擦因数在 0.20~0.45 间波动；在较高载荷下，涂层被磨穿后，涂层的摩擦因数趋于基体合金的摩擦因数，涂层合金的表面变形能力提高，该阶段质量磨损速率随载荷增加，趋势变得缓慢。

The effect of solid lubricants including polytetrafluoroethylene and graphite on the friction and wear behavior of the composites was examined on the same test rig as well.

结果表明：碳纤维使聚醚砜的摩擦磨损性能得到明显的改善，春改善程度同碳纤维的长度和体积分数相关；当碳纤维的体积分数约为15％时，聚醚砜复合材料的摩擦系数及比磨损率最低；添加固体润滑剂可以使复合材料的摩擦磨损性能得到进一步改善；随着温度及外载荷的变化，摩擦系数及比磨损率表现出不同的变化趋势。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。