They provide friction, so the vehicle can grip the road, but some of the power supplied to the tyres is lost as heat.
汽车的抓地力正是因为轮胎的摩擦力提供的。但供给轮胎的能量一部分要消耗在生成的热量。
"It describes the power needed to propel a bike against our everyday foes: gravity, weight, friction, wind resistance," he writes.
“它描述了推动自行车克服日常阻力——如引力、重量、摩擦力以及风阻——所需要的能量，”他这样写到。
The viscosity of the liquid medium reflects the ease of mobility, high viscosity, friction will increase, reducing output power, a waste of energy and have a high temperature.
液体的粘度反映了介质流动的难易程度，粘度过高会增加内摩擦阻力，降低输出功率，浪费能量，并产生过高的系统温度。
In the absence of friction, belts would not be capable of conveying power from one machine to another.
没有摩擦力，皮带就不能将动力从一台机器传送到另一台机器。
With the pressure released, there is no friction at work in the clutch, and the power flow is therefore interrupted.
随着压力的减小，离合器工作状态下的摩擦力消失，动力被切断。
The engine's phenomenal power is delivered through a clutch that features an ultra-light operating plate with superb oil drainage and beefy friction plates.
该发动机的惊人动力通过离合器传递，具有高超的石油与排水和结实摩擦片超轻型操作板。
Friction installations of up and down roller will help reduce resistance and lower power consumption.
上下压轮装置采用滚动摩擦，有利于减少工作阻力，降低功率消耗。
They are used to input or output the power through the friction and a pair of helical gears is also used to adjust the speed, so the speed can change between 0.75 and 1.22.
该装置通过八个钢球利用摩擦力将动力进行输入输出，用一对斜齿轮进行分度调速，从而使自行车在0.75～1.22之间进行无级调速。
Then, improving measures about instrument pipe, air-power coming out of earth, reducing friction were emphasized.
着重介绍了对切土头、气压出土、减摩等工艺的技术改进措施。
In either case the internal friction is found to be proportional to the first and second power of (1-s), where is the degree of long range order.
在这两种情况中，内耗都是正比于(1 - S)的一次幂或二次幂的，这里s是长程有序程度。
Three control modes have been worked out, such as time-control, deformation-control and power-peak control. Each model realizes automatic control in linear friction welding.
采用时间控制、变形量控制和功率峰值控制三种控制方式实现了焊接过程的自动控制。
Three control modes have been worked out, such as time-control, deformation-control and power-peak control. Each model realizes automatic control in linear friction welding.
采用时间控制、变形量控制和功率峰值控制三种控制方式实现了焊接过程的自动控制。
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