deformation of river bed

• 河床变迁,河床变动

deformation of river bed的用法和样例：

例句

1. The bed evolution of Oi River in Central Japan is studied with a 1-D numerical model of sediment transport.
   摘要利用一维的泥沙数值模型研究了位于日本中部的大井河河床变动情况。