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.
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