roughness coefficient造句怎么写

Border irrigation current advancement process model plays an important role to determine irrigation technical index, average field infiltration rate and roughness coefficient.

Surface roughness coefficient and its influencing factors on the slope of typical forests in Jinyun mountain of Chongqing

The wetted perimeter of this section is 83.7% of the rectangle in the same discharge, reach slope, roughness coefficient.

The experiment results show that the threshold velocity is affected by the ratio of roughness coefficient of ice cover and bed.