定床模型 meaning in Chinese

fixed bed model
immovable bed model
rigid bed model
rigid model

The resistance coefficient of the river , the scale affect of the rigid bed model , and the rule of channel dredging are also discussed in order to obtain the reliable conclusion
对河床的阻力系数、定床模型试验的比尺效应以及电厂下。游清挖原则进一步研究，以期给出较明确的结论。
Because it is relatively reliable in both theoretical and practical research , the rigid bed model , which is without deformation under the action of river flows , is widely used in the river hydraulic simulations . the advantages of visibility and high accuracy of the rigid bed models are evident for the complicated boundary conditions of rivers
在河道水力模型中，尤以河床在水流作用下不发生变形的定床模型应用最为广泛，在理论上和实践上都已比较成熟，当河段的边界过于复杂时，其直观、准确的优越性更为明显。