That is, the roughness coefficient decreased with the increase of Reynolds on steep slope.
在坡度较大时，阻力系数随雷诺数的增大而增大。
The results show that the Manning roughness coefficient increases with increasing water depth.
试验结果表明，曼宁粗糙系数随水深深度的增加而增加。
The wetted perimeter of this section is 83.7% of the rectangle in the same discharge, reach slope, roughness coefficient.
在同样水力条件下，最优园底直角断面的湿周是矩形最优断面的83.7%。
The experiment results show that the threshold velocity is affected by the ratio of roughness coefficient of ice cover and bed.
试验表明：冰盖下泥沙起动流速与冰盖及槽底糙率的相对比值有关。
The roughness coefficient increases when the relative roughness of the surface becomes larger under the same condition of discharge.
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。
With combining optimization method, an optimal model of determining synthetic surface roughness coefficient in film hole irrigation was developed.
实例计算与方法验证表明，该方法能够简单而有效地确定膜孔灌溉田面综合糙率系数。
A simpler fractal model to estimate the joint roughness coefficient (JRC) is suggested. It can be applied to simulate rock discontinuity profiles.
提出了一种更为简单的估算岩石断裂面粗糙度(jrc)值的分形模型，可用来模拟岩石断裂面剖面线。
Border irrigation current advancement process model plays an important role to determine irrigation technical index, average field infiltration rate and roughness coefficient.
畦灌水流推进过程计算模型对确定灌水技术要素、田间平均入渗率和糙率有十分重要的作用。
It is also found that, when the water depth is fixed, the Manning roughness coefficient increases as the longitudinal pier spacing increases up to approximately the pier width.
值得一提的是，当水深维持不变时，曼宁粗糙系数也会持续增加直至纵向基桩间距与其宽度相同为止。
We also find the obvious effectiveness of Gabion revetment. Analyzing actual measurement data, find out the roughness coefficient of Gabion revetment, to provide suggestion for revetment design.
试验发现格宾护岸对减小波浪爬高具有明显的作用，通过实测和统计分析得出了格宾材料的糙渗系数，为护岸设计提供参考。
The roughness coefficient as an important parameter is very critical and useful to the hydraulic engineering whenever on the stage of design, construction, operation and management of the project.
糙率系数作为水力计算中一个至关重要的参数，对其变化规律及取值范围的研究是进行各种水利工程设计、施工、运行和管理过程中的重要工作。
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.
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。
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.
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。
Relief, roughness and variance coefficient in elevation are main index in macro scale.
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。
Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.
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。
The turbulence coefficient and permeability is re lated with the grain size, sphericity and roughness of the proppant, and the porosity of the proppant-filling bed, and the experimental conditions.
紊流系数和渗透率与支撑剂粒度、球度、圆度、支撑剂充填层孔隙度和实验条件等有关。
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...
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...
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。
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