查询词典 rolling friction

In this paper, the forced vibration method was employed to measure the internal friction of bamboo crystalline and bi-crystalline aluminium.

近五十年来，晶界弛豫的温度内耗峰主要是用自由衰减方法进行研究的，这种研究是建立在下面的假设上：即晶界弛豫是一个速率过程，满足Arrhenius关系。

When analyze the forced vibration of drill string ,it is taken into consideration that the friction between drill string and wellbore impact on the vibration of the drill string.So static analysis of the drill string is included in this paper.

由于本文在分析钻柱的强迫振动时，考虑了钻柱与井壁摩擦阻力对钻柱的振动的影响，所以对钻柱的静力学也进行了分析。

But it increases the viscous forebody drag including the skin friction drag and shock wave drag.

但却增大了包含摩擦阻力和激波阻力的粘性前部阻力。

Finally, the wear and tear experiments on the lubricating oil were performed on the four-ball friction machine.

最后利用四球式摩擦磨损试验机对该润滑油进行了摩擦磨损性能测试。

Their friction and wear behaviors as additives in rapeseed oil were evaluated and compared with octadecanoic acid using a four-ball test machine.

以实验室合成的无臭硫化十八酸和硫化廿二酸作添加剂，在四球摩擦磨损试验机上考察了二者对菜籽油摩擦学性能的影响，并同十八酸进行了比较。

Their tribological behaviors as additives in 5 cst and synergetic effects with zddp were evaluated using four-ball friction and wear tester as well.

用四球机考察其摩擦学性能以及与zddp的配伍性能。

The tribological properties of di-hydroxy stearic acid as additives in castor oil were investigated using a four-ball friction and wear tester.

利用四球摩擦磨损试验机考察了所合成的双羟基硬脂酸在蓖麻油中的摩擦学性能，并用扫描电子显微镜观察分析了磨斑表面的形貌。

According to the fractional derivative model of viscoelastic damper and force-deformation-slip relation of friction element,a precise finite element model of FVD is constructed,and the method for forming element stiffness matrix and control force vector of FVD is deduced.

针对粘弹性材料的分数导数模型和摩擦单元的力-位移-滑移量的矩阵关系式，建立了FVD精确的有限元模型，推导了FVD单元刚度矩阵和控制力向量计算公式和求解方法；根据钢筋混凝土框架结构的非线性特性，建立了设置FVD非线性钢筋混凝土框架结构地震反应时程分析的控制方法。

It has been verified by comparison with experimental results that reduction of mean energy of projectile-like frag ments from beam energy is mainly caused by the action of friction.

与实验结果的比较验证了中能弹核碎裂碎片能量相对于束流能量的降低是由摩擦作用引起的。

Diseases as acute pleurisy can cause the roughened surfaces to rub each other and result in pleural friction fremitus.

急性胸膜炎时，粗糙的胸膜表面相互摩擦而产生胸膜摩擦音

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。