aggradations造句

• The test results show that the water-sediment regulation can reduce aggradations of the channel, increase its flowing capacity and improve the sediment delivery conditions of the channel in the lower river
  分析结果表明，调水调沙不仅能够减少河道淤积，而且能够有效增大主槽的过流能力，改善下游河道排沙条件。