... relative roughness 相对糙度,相对粗糙度... bed roughness 层粗糙度,河床粗糙度... roughness coefficient 粗糙系数 ...
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river bed roughness 河床糙率
bed form roughness 底床糙度
Sudden change in bed roughness 粗糙度突变
bed d roughness 层粗糙度
bed d form roughness 底床糙度
The presence of submerged plants increased the flow gradient, hence the bed roughness became larger to resist flow.
淹没植物的存在起阻流作用，增大了水流的坡降，使床面糙率变大。
On the basis of freeboard phenomenon in curve way and the improvement of curve flow velocity, this paper gets a useful calculating method of bed roughness.
本文基于弯道超高现象以及弯道流速计算的改进，得出了一种较为实用的泥石流沟床糙率计算方法。
The bed roughness height was expressed by the corrective height of vegetations, and the non-uniformity roughness was expressed by the variance of the height.
以植物高度表示有植物床面的粗糙突起程度，以高度的方差表示粗糙度的非均匀性。
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