查询词典 wear-out

In the study, calculation of two types of liner wear types based on the direction of liner wear and wear depth of the changes are studied. Mathematical models in terms of vector integral to calculate the liner wear volume is derived first.

本研究计算两种型式内衬之磨耗体积，依据内衬磨耗方向与磨耗深度的变化建立数学模型，并且使用向量积分计算内衬之磨耗体积。

The correlation among all these parameters of four different types of wear debris is conducted. In the analysis of surface texture, the maximum and minimum brightness point in texture normal line is examined firstly. Then, the differences among some typical wear particles are analyzed through analyzing the texture gray level co-occurrence Matrix, color principal component analysis of the wear particle and the direction of wear particle outline.

在磨粒表面纹理分析中，通过检测磨粒表面纹理法线上亮度极小、极大值的纹理分析方法分析了滑动磨粒与疲劳磨粒差别，通过灰度共生矩阵进行纹理分析四种不同类型的磨粒图像，通过主成分分析分析方法对磨粒颜色特征进行识别，以及根据磨粒轮廓方向判断磁性磨粒和非磁性磨粒。

It shows in clinic as tooth sensitivity, pulpitis,periodontitis,food impaction ,deformation of basifacial caused of loss of occlusal height, temporomandibular disorder syndrome, etc. The wear property of artificial tooth material will lead a direct effect to restoration result, when it exists in oral environment. It will cause tooth enamel loss too much in a very short period, if the wear property of artificial tooth superior to tooth enamel; but if it is inferior to tooth enamel, serious wear will occur on restoration occlusions, which will lead to loss of bite functions and even decrease of occlusal vertical dimension, disorder of bite functions, etc. Therefore, it is important to artificialtooth material not only it"s biotic compatibility, mechanical function, chemistry property but also it"s wear property.

当口腔中存在修复体时，人工牙材料的磨耗性能也直接影响临床修复的效果，当其磨耗性能强于天然牙釉质门时，将会引起天然牙釉质过度磨耗；当其磨耗性低于天然牙釉质时，又会在较短时期内引起修复体咬合面磨损过度，失去咬合功能，严重者甚至出现咬合垂直距离降低，咬合功能紊乱等症状因此，对于人工牙材料除了考虑生物相容性、机械性能及化学性能外，还应考虑到材料的磨耗性能，而磨耗率的测定一直是评价天然牙及人工牙磨耗性能的优越指标之一。

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。

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 indicate that radial distance of the bushing from the rotor center and the radius of the hemispherical bushing significantly affect wear rate,and minimzing both two values will result in lowest wear for micro-rotor systems in MEMS.However,it is noted that the bearing radius sets a lower limit on the hemispherical bushing radius since the bushings are located beyond the rotor inner radius.It is desirable to reduce their effects on friction and wear on micro-rotors by regulating the radius of the bushing and the radial distance of the bushing from the rotor center within permissive range of micro-fabrication.Severe wear exists with increasing applied load and rotating speed of the rotor.Stress distributions in the contact region are different from Hertz solutions due to the convergence stresses apearing on the uncontinuous curvature line and the contact pressures display symmetrical parabola in the contact region.

结果表明：在MEMS微转子系统中，微转子轴衬偏心距离和转子轴衬半径影响线磨损率，以两者减至最小为较理想，但须注意设计中轴承半径的限制，并使轴衬偏心距离大于轴承内半径；在转子加工制造许可的范围内，可以通过调整转子轴衬的半径和偏心距离来减少摩擦磨损对微电机的影响，随着转子所承受载荷和转子旋转速度的增加，其磨损严重；接触区的应力分布不同于经典Hertz解，这是由于应力集中出现在不连续的曲率线上，且接触区的接触压力呈现轴对称抛物线状分布。

ABSTRACT The transition of wear mechanisms of steels GCr15 and T8 during unlubricated sliding and the behaviors of friction and wear of various microstructures in these steels were systematically studied by wear testing and SEM observations of worn surfaces and wear particles.

本文通过摩擦磨损试验和磨损表面及磨损颗粒的SEM观察，系统地研究了GCr15钢和T8钢在干滑动条件下的磨损机制转化和钢中不同显微组织在不同磨损机制。。。

The Ti_3SiC_2-SiC multiphase ceramic were fabricated by in situ synthesis under hot isostatic pressing.The examinations indicate that,the dominant wear mechanisms change with load increasing under unlubricated conditions,it is main abrasive wear under low load,and it is main adhesion wear under high load.Lubricating oil improves the friction coefficient and wear rate of Ti_3Si...

结果表明：干摩擦条件下随载荷的变化，占主导地位的磨损机制将发生变化，在低载荷下以磨粒磨损为主，高载荷下以粘着磨损为主；同干摩擦相比，润滑油对摩擦副的摩擦磨损性能的改善均很显著；Ti3SiC2/SiC复相陶瓷的磨损主要由粘着和微断裂引起的。

Under the three body abrasive wear, the cutting is main reason of wear of the hard materials (3M and 2M). It is an important wear form of material 4M and several austenitic manganese steel at high load condition. b. The plastic materials form the block debris after deforming many times, forming the block-shape debris is the major waar form of this kind of material under several given wear conditions.

在三体磨粒磨损条件下，切削是造成编号为2M和3M等硬质材料磨损的主要原因，也是4M和几种奥氏体锰钢在高载荷下磨损的重要形式；块状屑的形成是塑性较好的材料在各种磨损条件下磨损的主要形式。

The wear mechanisms of the graphite pairs were examined based on the original image before and after sliding, the result shows that under air media, the graphite pairs works on the conditions of boundary lubrication and the wear mechanism is dominated by adhesion and plough wear, which is dominated by slightly plough wear under water environment.

磨损表面原始形貌对比分析表明，在空气中，摩擦副表面处于边界润滑状态，主要磨损机制是粘着磨损和犁削；水润滑条件下为轻微犁削；油润滑条件下，摩擦副表面处于为边界润滑和流体润滑状态，油中的减摩剂对试样表面有抛光作用。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。