在10,000 ~ 90,000的高雷诺数范围内，测量了流动摩擦系数、局部和平均对流换热系数。
In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.
风向在城市里也会改变，因为建筑物增加了它们周围流动的空气的摩擦力。
Wind movements are also modified in cities because buildings increase the friction on air flowing around them.
“几十年前，冰川坐落在这道海脊上，其摩擦力阻止了冰川流动，”他解释道。
"Some decades ago, the glacier was sitting on this ridge and the friction of the ridge was restraining the flow of the glacier," he explained.
粘度：原油粘度是指原油在流动时所引起的内部摩擦阻力，原油粘度大小取决于温度、压力、溶解气量及其化学组成。
Viscosity: viscosity is the crude oil in the flow caused by the internal frictional resistance, crude oil viscosity depends on temperature, pressure, dissolved gas and its chemical composition.
低摩擦系数—切屑与刀具间的摩擦系数应当较低。这会使磨损率较小及切屑流动更好。
Low friction-the coefficient of friction between the chip and tool should be low. This would allow for lower wear rates and better chip flow.
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。
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.
主要通过对流体流过非圆形直管的流动分析，得到影响非圆形直管摩擦系数的因素。
Newton fluid's flowing in special pipe is analysed, it is gained that some factors affect the friction coefficient of flowing fluid in special pipe.
分析了各种流动参数和几何参数对轴向速度、二次流动、壁面摩擦力、摩擦系数比的影响。
We analyze the effects of the flow parameters and the geometrical parameters on the axial flow, the secondary flow and the friction.
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.
研究了埋头弹火炮弹带挤进时的流动应力和摩擦系数，针对其特殊结构数值计算了挤进阻力，分析了挤进过程对内弹道性能的影响。
The stress and the friction coefficient of band during the engraving process were researched, and the resistance of this special structure was calculated.
建立了摇摆条件下圆管内的层流流动模型，推导出无量纲化的速度表达式，得到摩擦阻力系数关系式。
The model of laminar flow in tubes in rolling motion is established. The dimensionless correlation of velocity is derived, and the correlation of frictional resistance coefficient is also obtained.
用改进的油流显示法研究和对比了层流和湍流状态下绕椭球流动的表面摩擦力线结构。
Structures of the skin friction lines (SFL) appearing on a prolate spheroid in laminar and turbulent flows were investigated and compared by using an improved oil-flow visualization technique.
自组装分子膜粘着效应对摩擦力的影响与自组装分子的键合及流动相关。
The effect of the adhesion on the friction force of the self-assembled monolayers is dependent on the flowing and bond of the self-assembled molecules.
摩擦阻力计算是管内两相流动中的一个基本问题。
Flow friction calculation is one of the basic problems of two phase flow in tubes.
摩擦阻力计算是管内两相流动中的一个基本问题。
Flow friction calculation is one of the basic problems of two phase flow in tubes.
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