性摩擦

Matching the above-mentioned materials for wear resistance were tested using the friction pair formed by the ring and block.

将上述材料分别配对进行耐磨性试验，试验用的摩擦副由环和块组成。

Third, in order to prevent frostbite, usually can be easy to frostbite in cold water friction parts, rub into the red so far, so can increase the cold tolerance of these parts.

第三，为了防止冻伤，通常可以很容易冻伤冷水摩擦部分，进入红色摩到目前为止，这样可以增加这些地区耐冷性。

A spring-block model to forecast the movement of sliding body is presented, in which the deformation and speed inhomogeneousness of sliding mass, the energy conversion and dissipation and the friction on the slip surface are also considered. The deformation of single sliding body in the whole sliding process can be determined by numerical method.

考虑到滑落体滑动过程的速度和变形的不均匀性、变形能的积累与释放以及滑体与滑床的摩擦等，建立了滑落体运动的弹簧滑块模型，该模型通过数值计算的方法可以计算滑落体滑动全过程的变形。

Furthermore,the influences of hot working parameters,such as friction factor,the top die speed and initial die temperature,on the temperature distribution had been investigated,and the temperature distribution in different deformation zones was analyzed.

同时由于坯料与模具和环境之间存在着温度差，以及坯料和模具接触面上的摩擦功不断转化为热量，使得坯料在变形的同时，将以各种形式和模具及周围环境进行热交换，增加了坯料内部温度场分布的不均匀性。

Analysis shows that choosing tube material with little Bauschinger effect and decreasing the friction coefficient between tube and die will help to improve the formability of tubes in the process and enlarge the usable range of curling radius.

分析表明，选用Bauschinger效应较弱的管材且设法减小管与圆角模之间的摩擦系数有助于提高管件内翻成形性并增大卷曲半径的可用范围。

Thus ensuring axial symmetry of the nozzle and jet pipe in the structure design is the key of preventing the jet pipe from being pressed and locked.

保证喷嘴、喷管结构的轴对称性是防止喷管后段成为受压缩状态、乃至导致摩擦锁止的关键。

To make the measure of area of large-grained spherical copper powder reach 70~80% of the working area or so, achieving the purpose of even alternately distributing of copper powder and POM. It has a good comprehensive ability of load-bearing, friction and wear endurance, creep resistance and heat conduction.

我们通过机械加工，使大颗粒球形铜粉分布在工作面的面积达到70~80%左右，形成铜粉与改性聚甲醛基本均匀相间分布的状况，其承载能力、摩擦磨损性能、抗蠕变能力和导热性等综合特性较好。

Furthermore, the connection between two sesamoids and metacarpal was a kind of soft tissue connection which seemed like fabric, it could exist mini-motion between two sesamoids and metacarpal, resulting in the increasing friction between the tendon of flexor pollicis longus muscle and sesamoids. Meantime, it could lead to metacarpophalangeal joints dislocation and injury the tendon sheath of flexor pollicis longus muscle.

而且，籽骨和掌骨之间没有骨性连接，为纤维软骨样软组织连接，导致籽骨和掌骨之间可以微动，拇指屈伸时，籽骨和掌骨间的微动导致拇长屈肌腱与籽骨摩擦进一步加大，籽骨易脱位，产生籽骨嵌顿于掌指关节，造成拇长屈肌腱狭窄性腱鞘损伤。

The transformation of the yaw moment under differential brake and the impact of the slip ratio and road surface friction coefficient to the yaw moment were analyzed. The distribution method of the brake force was confirmed. After analyzing the observability of the control system, the state observer was designed, the evaluation of the side slip angle was completed and result of the evaluation wan validated.

本文分析了差动制动时整车横摆力矩的变化情况，研究了滑移率和路面摩擦系数对横摆力矩的影响，确定了制动力的分配原则，进行了控制系统的可观性分析，并设计了状态观测器，完成了质心侧偏角的估算并对此估算结果进行了验证。

In this paper, a simple relation between sea bottom friction and sea surface slope is firstly derived by using the viscosity condition on the sea bottom, and the relation between horizontal current flux and sea surface slope is then obtained.

利用海底粘滞性条件，首先导出了海底摩擦与海面坡度之间的简单关系式，在此基础上导出了水平流通量与海面坡度的关系式。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。