1) field roughness coefficient
田面糙率
1.
Field roughness coefficient for different soil surface conditions were studied The main influence factor of field roughness coefficient in bare land and plowed land was analyzed.
田面糙率是影响田面水流运动的重要参数之一。
3) synthetic surface roughness coefficient
田面综合糙率系数
1.
With combining optimization method, an optimal model of determining synthetic surface roughness coefficient in film hole irrigation was developed.
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。
4) bed roughness
床面糙率
1.
The relationship between riverbed roughness and its fractal dimension is obtained according to the experimental data and compared with the relationship between roughness and representative diameter.
本文在分析非均匀沙床面颗粒随机分布特性的基础上，对床面颗粒暴露度函数关系进行了分析，通过简化颗粒的排列方式，利用分形理论研究了初始及粗化床面糙度的分形特征，结合实验资料讨论了床面糙率ｎ与糙度分维数Ｄ的关系，并与床面糙率ｎ和代表粒径（ｄ５０、ｄ９０）的关系进行了比较，初步认为对于初始床面分维数与床面糙率具有更好的相关关系，而粗化床面两者代表性基本一致，为更好地研究床面糙率、泥沙起动及其输沙过程提出了一种新的研究方法。
5) surface roughness
表面粗糙率
6) roughness coefficient
糙率
1.
Relationship between height of vegetation after deflection and roughness coefficient of vegetated channels in submerged state;
淹没状态下河道植物偏斜高度与糙率的关系
2.
Analysis of the regularity of the river roughness coefficient in the Aletain mountainous area in Xinjiang;
新疆阿勒泰山区河流糙率规律浅析
补充资料：田面
1.指田地的表土。 2.耕地的面积。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条