河段糙率是计算水库、水电站回水和确定淹没搬迁线的重要参数。
The river reach roughness is a important parameter for calculating reservoir and hydropower station backwater and determining submerge and move line.
河道糙率是洪水水力计算的重要参数，引入控制论理论，应用带参数的卡尔曼滤波法进行河道糙率反演分析。
The channel friction is importance parameter of hydraulic analysis, a channel friction parameter inversion method based on Kalman filter with unknown parameter vector is proposed.
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。
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.
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