non-silting velocity

例句：

1. 1.The non-sedimentation velocity of the sediment is a key factor in predicting flood levels.
   沉积物的非淤积速度是预测洪水水位的关键因素。
2. 2.The study found that the non-sedimentation velocity of the river increased by 5% due to the construction of the new bridge.
   研究发现，由于建造新桥，河流的非淤积速度增加了5%。
3. 3. The engineer used the data to calculate the non-sedimentation velocity of the soil,which helped in designing the drainage system.
   工程师利用这些数据计算了土壤的非淤积速度，这有助于设计排水系统。