To resolve the sediment problems in the hydraulic engineering, sediment research concerns on realizing the rule of sediment movement and fluvial processes.
泥沙研究主要是认识水流中的泥沙运动规律、河床演变规律，进而解决水利工程中的泥沙问题。
Five basic problems, which relate with sediment transport, have been discussed.
探讨了与泥沙运动有关的五个基本问题。
As one of the most basic problems in the sediment transport theory, the mechanism of the sediment incipience is also needed to be understood for the study of local scouring process.
泥沙起动是泥沙运动理论中最基本的问题之一，也是研究泥沙输运及局部冲刷时必需解决的问题。
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