在烧蚀滞后滚转力矩的计算方法中，本文主要介绍滞后引射率和粗糙度对壁面摩擦系数联合影响的一种快速计算方法。
In the calculations of roll torque of ablation lag, a rapid method for calculating combined influence of ablation injection and roughness on skin friction coefficient is mainly described.
通过木排原型阻力的现场测试与相应的模型试验分析对比，确定了木排粗糙度附加系数的数值。
The value of additional coefficient of raft roughness is established through the comparative analysis of raft prototype resistance measurement on the spot and relevant model experiment.
摩擦系数主要受纳米管径的影响，还受表面粗糙度和弹性模量的共同影响。
Frictional coefficients were mainly related with nanotube diameters of specimens, next with surface roughness and elastic modulus of specimens.
研究结果表明：静子和转子壁面粗糙度对大间隙环流中偏心转子动特性系数有较大影响。
The effects of stator and rotor wall roughness on the dynamic coefficients of the eccentric rotor in large gap annular flow have been investigated with numerical method.
若流线型物体表面的摩擦阻力系数仅为相对粗糙度的函数，则形状阻力系数与雷诺数无关。
Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.
实验结果表明当壁面粗糙度超过1%时摩擦系数随着壁面相对粗糙度的增加而增加。
The friction factor obtained from the experiments increases with the surface roughness increase when the relative roughness is greater 1%.
在宏观尺度上，以地形起伏度、地形粗糙度、地形高程变异系数为主。
Relief, roughness and variance coefficient in elevation are main index in macro scale.
对于不同粗糙程度的壁面，在同一流量条件下的糙率系数会随着相对粗糙度的增大而增大。
The roughness coefficient increases when the relative roughness of the surface becomes larger under the same condition of discharge.
本文对反射系数测定值进行了初步的定量分析，讨论了实际金属表面的反射机理，从而导出测定值与实际表面粗糙度的关系。
The present paper analyses the measuring reflection coefficient and discusses the reflection principle on real surface of metalwork. The relation between measuring magnitude and roughness is th...
通过测量反射光密度分布曲线的半宽度，由高斯曲线系数的标准差计算表面粗糙度。
The reflected intensity curve can be approximated by a Gaussian function. The width of the intensity distribution curve was evaluated with...
通过测量反射光密度分布曲线的半宽度，由高斯曲线系数的标准差计算表面粗糙度。
The reflected intensity curve can be approximated by a Gaussian function. The width of the intensity distribution curve was evaluated with...
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