roughness resistance

The surface roughness parameters, surface profiles, Abbot curves and the profile ratio of peak-to-valley are applied to analyse the wear resistance of the above material.

通过Ra、表面轮廓、支承长度率曲线、轮廓高度幅度分布图、轮廓峰谷比等粗糙度参数评定其加工表面的耐磨性。

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The relationships for hydro-dynamic parameters ( Reynolds number, Froude number, resistance coefficient and flow velocity) of overland flow as a function of bed roughness, flow discharge and slope gradient were simulated by means of indoor fixed-bed resistance experiments.

在室内试验的基础上，采用定床阻力试验研究了坡面流水力学参数（雷诺数、佛汝德数、阻力系数和流速）随床面糙率、流量和坡度的变化规律。

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The increasing of surface roughness of non-porous electrodes can also increase biomass on the anode and decrease anodic internal resistance.

增加非多孔电极的表面粗糙度也可增大阳极上的微生物量，同时还能降低阳极的内阻。

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Grain shape and surface roughness are indicated to codetermine the abrasion resistance of the film. Further, the AR film with triangular grain and moderate roughness shows good abrasion resistance.

分析得到了粗糙度与耐磨性关系曲线，结果表明三角形晶粒以及适中的粗糙度能有效的提高薄膜耐磨性。

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The amorphous layer had more compact structure, higher hardness, lower roughness and higher electrical resistance.

结果表明,该非晶层相对于直接阳极化层,组织致密 、 硬度高 、 粗糙度低、电阻高.

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The resistance of surface flow has a reverse relation with Reynolds number. With the same Reynolds number, the resistance coefficient of surface flow is greater than that of laminar flow in open channel and increases with increased bed roughness.

坡面水流阻力与雷诺数的呈反比关系，相同雷诺数条件下，阻力系数比明渠层流阻力系数要大，且随床面粗糙度的增加而增大。

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A new model of thermal contact resistance based on the statistic characteristic of roughness profile is proposed in this paper.

本文在对粗糙度曲线统计特征分析的基础上，提出了一种接触热阻的计算模型。

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