river bed adjustment 河床调整

river width adjustment 河宽调整

river regime adjustment 河势调整

river system adjustment 河流系统调整

river channel adjustment 河床调整

width adjustment of river 河宽调整

adjustment of river channel 河道调整

self-adjustment of river bed 河床自动调整作用

River width and flow adjustment 调整河宽与调整流向