滚动摩擦

The rolling friction coefficient,elastic resilience and ultimate strength of the three kinds of roller s are researched.

对3种材料制作的滚轴的滚动摩擦系数、弹性恢复力和极限强度进行了试验，并对3种滚轴的隔振效果进行了计算机模拟分析。

And more, the article dissects the friction of the joggle, notarizes that the character of the friction is mixed friction which is near boundary friction, and get a conclusion that the rolling part of friction can be neglect through a c...

继而对该处的摩擦问题进行剖析，确认滑动性质为接近边界摩擦的混合摩擦，并且通过一个实例计算得出滚动摩擦部分可忽略不计的结论。

Some key part is ameliorated to meet the demands of working. This thesis mainly includes:(1) Analysing the working principle of the spring operateing mechanism, expatiating the character of the mechanism;(2) With the design aim of the spring operating mechanism, accomplishing the design of ZW□-12/630-20 outdoor HV vacuum breaker based on the systemic design theory of the spring operating mechanism, which includes spring mechanism of open-close switch; cam mechanism based on the principle of power balance; buckle-off mechanism with force-minished device; ratchet wheel mechanism with number-increased detent;(3) In the design on the spring operating mechanism for the outdoor vacuum breaker, using the air cushion device with speed controller to ensure the steady working of the spring operating mechanism;(4) Accoding the problem of daily maintenance for HV circuitbreaker, giving some effective steps of daily maintenance.

论文工作主要包括以下几个方面：(1)从真空断路器弹簧操动机构的功能原理出发，详细分析了该机构的工作原理，阐述了机构工作的基本特性；(2)根据工程实际提出了真空断路器弹簧操动机构的设计目标，在系统分析弹簧操动机构设计理论的基础上，完成了ZW□-12/630-20型户外真空断路器弹簧操动机构的设计工作，其中包括真空断路器弹簧操动机构的分合闸弹簧机构的设计；以输出力特性曲线设计机构理论演化出的功率平衡原则为基础的凸轮机构的设计；带有减力机构的滚动摩擦扣结方式的脱扣机构设计；根据实际情况增加了棘爪数量的棘轮机构设计；(3)在真空断路器弹簧操动机构的设计中，引入了速度控制模式空气缓冲器，对惯性负载起到了良好的自动缓冲效果，从而保证了真空断路器弹簧操动机构稳定、有效地运行，保证了真空断路器的动作质量；(4)针对目前真空断路器运行过程中存在的问题，提出了有效的日常维护措施。

It involves a simple mechanical principle: sliding friction, rolling friction small.

它涉及一个简单的机械原理：滑动摩擦大、滚动摩擦小。

It provides the testing program of planar bearing rolling friction .

给出了平面轴承滚动摩擦试验方案。

It involves a simple mechanical principle: a large sliding friction, rolling friction small.

它涉及一个简单的机械原理：滑动摩擦大、滚动摩擦小。

By reducing the rolling friction and thermal expansion, SBC linear guides can maintain repeatability for long periodsof time.

通过减小滚动摩擦和热膨胀，SBC直线导轨可以实现长时间的重复运转。

Coefficient of rolling friction in building′s integer shift is an important factor about safety and economy, and there are some construction experience and interior experiment about this, but few locate experiment.

摘要］在建筑物整体移位工程中，滚轮的滚动摩擦系数是一个关键的影响因素，虽然目前已有一些施工经验值和实验室模型实测值，但是在实际施工过程中对该值的测定却很少。

The rolling friction coefficient between roller and track is an important parameter in building monolithic moving engineering .

滚轴滚动摩擦系数是建筑物整体迁移工程水平动力计算的重要参数，在钢管混凝土滚轴与钢板的滚动摩擦试验中，测得滚动摩擦系数为0。

The rolling friction coefficient between roller and track is an important parameter in building monolithic moving engineering.

滚轴滚动摩擦系数是建筑物整体迁移工程水平动力计算的重要参数，在钢管混凝土滚轴与钢板的滚动摩擦试验中，测得滚动摩擦系数为0.002～0.004，它随滚轴受到的竖向压力增大而减小。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了