水沙两相流冲淤的双临界现象，对于多沙河流河道泥沙的输移有重要意义。
This double threshold phenomenon plays an important role in sediment transportation of heavily sediment laden rivers.
流域面积的大小及气候和环境性质的差异对河流碳的输移及循环过程影响显著。
The area of the drainage basin and differences in climate and environment markedly impact the export and cycle processes of the riverine carbon.
通过数学模型定量的计算了大沙河流域人类活动对泥沙输移减少的贡献率平均为65.6%，而同期径流和降雨对泥沙减少的贡献率平均则为34.4%。
The average contributive ratio affecting soil erosion by human activities is 65.6%, and at the same period the contributive ratio by runoff and rainfall is 34.4%.
天然河流的泥沙输移大多在浑水条件下进行，浑水条件与清水条件下的输沙机理存在一定差异。
Sediment transport in natural rivers occurs almost in sediment-laden flow. The difference may exist between mechanism of sediment transport in turbid waters and that in clear waters.
天然河流的泥沙输移大多在浑水条件下进行，浑水条件与清水条件下的输沙机理存在一定差异。
Sediment transport in natural rivers occurs almost in sediment-laden flow. The difference may exist between mechanism of sediment transport in turbid waters and that in clear waters.
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