糙率系数 meaning in English
roughness coefficient
Examples
- 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。 - Based on water flow movement characteristics in film hole irrigation , a zero - inertia model form surface water flow movement in film hole irrigation were presented in this paper
根据膜孔灌溉田面水流运动特性，建立了膜孔灌溉田面水流运动零惯性量数学模型，并将其与优化理论相结合，提出了确定膜孔灌溉田面综合糙率系数的优化模型。 - Abstract : based on water flow movement characteristics in film hole irrigation , a zero - inertia model form surface water flow movement in film hole irrigation were presented in this paper
文摘:根据膜孔灌溉田面水流运动特性，建立了膜孔灌溉田面水流运动零惯性量数学模型，并将其与优化理论相结合，提出了确定膜孔灌溉田面综合糙率系数的优化模型。 - The main contents are as follows : ( l ) through theoretic analysis and flume experiments , the characteristic of water resistance through frames is researched , and transforms relation between resistance coefficients and manning ' s roughness coefficients is established , and then experiential formula of manning ' s roughness coefficients is fitted
主要研究内容如下： ( 1 )通过理论分析和水槽试验，研究了穿越四面体框架群水流阻力系数的变化规律，建立了阻力系数与框架群等效曼宁糙率系数的转换关系，拟合出了糙率的经验计算公式。