roughness coefficient

基本解釋

When F is larger than 12.2371, the vegetation roughness coefficient and drag coefficient decrease as F increases.
若植被抗彎指數(shù)F值大于12.2371，植被糙率系數(shù)和阻力系數(shù)隨F值的增大而減小。
After that, the authors take Beishan of Gansu province for the HLW disposal area as the example, and measure the joint roughness coefficient(JRC) of surface rock mass and cores of borehole.
文章評述了現(xiàn)有巖體結(jié)構(gòu)面粗糙度系數(shù)（JRC）的各種測定方法及存在的問題，分析了在高放廢物處置庫預(yù)選場址甘肅北山花崗巖地區(qū)，用“簡易縱剖面儀”進行地表巖體及鉆孔巖心裂隙結(jié)構(gòu)面JRC的測量結(jié)果。
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.
糙率系數(shù)作為水力計算中一個至關(guān)重要的參數(shù)，對其變化規(guī)律及取值范圍的研究是進行各種水利工程設(shè)計、施工、運行和管理過程中的重要工作。