The great number of moving parts, the sliding friction, the reversal of direction at rapid intervals, and the mechanical shock involved all contribute to severe wear.
大量运动部件、滑动摩擦、极短时间内运动方向的变化以及机械冲击等都使摩损加剧。
The order of slip boundary condition shows an apparent influence on the friction coefficient but only a slight influence on the Nusselt number if compressibility is ignored.
在不考虑可压缩性因素时，滑移边界条件的阶数对阻力系数的影响较大，对换热系数的影响不是十分明显。
In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.
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。
This paper gives, from the energy equation for rapidly varied flow, the equations for the calculation of the curve of equal cavitation number in consideration of friction losses.
本文在考虑水流阻力的情况下，提出计算等空化数曲线的方程组，并给出电算程序。
The number of rubber strip. The other, when the wiper wiper is not complete, can also purchase a wiper blade corrector, friction rubber parts and rain wiper blade, the irregular wear part corrected.
别的，当发现雨刮器刮水不完全时，也能够采购一种雨刮片修正器，夹着雨刮片的橡胶部位磨擦，使其不规则磨损的部分得到修正。
A new coefficient of Prandtl's relation was obtained from the experimental data. Compared with three conventional relations of friction factor, the range of Reynolds number was extended.
在实验结果的基础上提出了普朗特摩擦系数关系式的新系数，与常用的摩擦系数关系式相比，扩大了普朗特摩擦系数关系式的雷诺数应用范围。
The flow friction coefficient increases with the increase of the cooling air Reynolds number and decreases with the rotating Reynolds number.
阻力系数随旋转雷诺数的增大而减小，随冷气雷诺数的增大而增大。
In this paper the results of calculations of the coefficients of skin friction and heat transfer (Stanton number) on the surface of hypersonic flight vehicle are presented.
本文给出了高超声速飞行器表面摩阻和传热系数(斯坦顿数)的计算结果。
The smaller the Reynolds number is, the smaller the rolling period is, and the greater the maximum rolling Angle is, the greater the fluctuations in amplitude of the friction coefficient are.
雷诺数越小，摇摆运动的周期越小，最大摇摆角度越大时，实验段摩擦阻力系数波动幅值越大。
Strouhal number in two-phase flow reduces with the increase of the void friction.
两相流斯特拉赫数随含气率的增加而减小。
Strouhal number in two-phase flow reduces with the increase of the void friction.
两相流斯特拉赫数随含气率的增加而减小。
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