stream channel form ratio

例句：

1. 1. The study of the stream channel formationratio is crucial for understanding the dynamics ofriver systems.
   研究流道通道形成比率对于理解河流系统的动力至关重要。
2. 2. The engineersused a computer model to calculate the streamchannel formation ratio and optimize the design.
   工程师们使用计算机模型来计算流道通道形成比率，并优化设计。
3. 3. The ratio ofsand to silt in the stream channelplays a significant role in determining the stabilityof the riverbed.
   流道通道中沙粒与淤泥的比例对决定河床的稳定性起着重要作用。