However, it is difficult to select suitable material of model pipes for larger model scale.
但对于较大模型比尺，很难找到理想的模型材料。
The model scale and the ratio of prototype to model for various hydraulic elements are selected in the light of theory of unsteady flow similarity for hydraulic models.
模型比尺和模型中各项水力要素的比例是根据不稳定流模型相似条件选定的。
An experimental investigation into the properties of the wake behind a horizontal-axis wind turbine (HAWT) rotor is carried out at model scale, using a single slanted hot-wire probe.
在水平轴风力机模型不同尖速比条件下，利用旋转单斜丝热线在风轮下游进行尾迹流场速度测量。
To overcome the limitation of ESD on model scale control, this thesis proposes a ESD-based modular theory and studies the method of transformation between ESD and probability influence diagram.
针对ESD模型规模控制方面的局限，提出了基于ESD的模块化原理，研究了ESD与概率影响图的转化方法；
To overcome the limitation of ESD on model scale control, this thesis proposes a ESD-based modular theory and studies the method of transformation between ESD and probability influence diagram.
针对ESD模型规模控制方面的局限，提出了基于ESD的模块化原理，研究了ESD与概率影响图的转化方法；
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