随着石墨颗粒含量从5%增加到20%，镁合金基复合材料的耐磨性得到明显的改善，磨损质量损失与摩擦系数都降低到较低水平。
With graphite particle content increasing from 5% to 20%, wear weight-loss and friction coefficient of the composites are obviously declined, greatly improving wear resistance of the composites.
对于速度边界层提出了相似性解的解析结果，给出了速度分布、边界层厚度、摩擦阻力和水头损失的解析计算表达式。
Calculation formula of velocity distribution, boundary layer thickness, friction force and loss of water head are given out, in accordance with the result from theory analysis of similitude solution.
无滑动、摩擦、转动部件，可降低能量损失。
No sliding, friction, rotating components, can reduce the energy loss.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
While fluids flow through a pipe, dynamics loses because of the surface friction of pipe.
管道摩擦力是指由管道引起的流动阻力，作为一个常用原则，最好是使用最大的实用的管道尺寸以避免在水泵性能方面的损失。
Pipe friction is the resistance to flow caused by the pipe. As a general principle, it is better to use the largest practical pipe size to avoid losses in pump performance.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
The pressure head of the liquid will decrease due to the friction on the surface of pipes when it flows through the pipes.
磨损失效系指表面之间的相对滑动摩擦导致其工作表面金属不断磨损而产生的失效。
Wear failure refers to the relative sliding friction between the surfaces causes the surface of the metal continue to wear their work arising from the failure.
采用摩擦学系统分析方法研究了中部槽摩擦学系统结构，在此基础上，探讨了中部槽磨损失效的类型及其影响因素。
Tribological systems structure of ore chamfer was studied by tribological systematical analysis, on the base of which the types of and corresponding influence elements were discussed.
铝青铜的摩擦系数显著降低，单位时间内磨损质量损失显著减小，因此明显提高了铝青铜的耐磨性能。
Ta ion implantation reduces the friction coefficient and friction and wear volumes of the Al bronze. Therefore, Ta ion implantation can improve wear resistance of Al bronze.
等离子体整理后纤维表面产生微小的细纹和凹坑，使纤维之间的摩擦力增加，减小织物的强力损失。
After the plasma finishing, the fabric surface had fine lines and pits, and the friction between the fibers was increased, which could effectively improve the fabric strength losses.
给出了测取液压抽油机系统压力损失、流量损失以及油缸的摩擦力损失等的方法，并由此求出系统的机械效率与容积效率。
The test method of pressure loss, flow loss and frictional force loss etc. of the hydraulic pumping units is presented, from which the mechanical efficiency and volumetric efficiency are obtained.
用摩擦学的观点分析了冷拔顶头磨损失效过程，提出了冷拔顶头表面强化措施。
Based on analysis of the process of pipe cold-drawing plug's wear-caused failure with the Dointview of friction science, measures for surface strengthening of the said plug were made.
流体流经管道时，由于管道表面的摩擦力而产生力头损失。
While flowing through a pipe, the fluid is subjected to the loss of head due to the friction of the inner surface of the pipe against it.
摩擦学进步使得人类有可能大大减少机器和工艺过程中的能量和物质损失。
Advances in tribology have made it possible to considerably reduce energy and material losses in machines and during technological processes.
摩擦学进步使得人类有可能大大减少机器和工艺过程中的能量和物质损失。
Advances in tribology have made it possible to considerably reduce energy and material losses in machines and during technological processes.
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