• 1. roughness coefficient: 粗糙系数 | 糙度系数 | 粗糙度系数 | 粗拙系数
• 2. equivalent roughness coefficient: 当量粗糙度系数 | 等值糙率系数
• 3. Manning roughness coefficient: 曼宁糙率系数 | manning糙率

更多释义

• 1.That is, the roughness coefficient decreased with the increase of Reynolds on steep slope.
  在坡度较大时，阻力系数随雷诺数的增大而增大。
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• 2.The wetted perimeter of this section is 83.7% of the rectangle in the same discharge, reach slope, roughness coefficient.
  在同样水力条件下，最优园底直角断面的湿周是矩形最优断面的83.7%。
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• 3.The experiment results show that the threshold velocity is affected by the ratio of roughness coefficient of ice cover and bed.
  试验表明：冰盖下泥沙起动流速与冰盖及槽底糙率的相对比值有关。
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