[计] 无维单位,无量纲单位;
Secondly, based on the discussion of condition of sediment incipient motion, the dimensionless unit stream power at sediment incipient motion is put up, so that the theory of sediment incipient motion become more integrated.
二是在对泥沙起动条件讨论的基础上,建立了泥沙起动的无因次临界单位水流功率,进一步完善了泥沙起动的有关理论;
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