Then this paper selects porosity, permeability, flow zone index and other parameters to carry on cluster analysis, divide flow units and establish identification index system of flow units.
在此基础上选取孔隙度、渗透率、流动层带指标等参数进行聚类分析，划分流动单元并建立流动单元判别指标体系。
In design of anechoic chamber with higher quality, when requirements of quiet zone index are higher, it must use the geometrical theory of diffraction instead of the geometrical optics for accuracy.
在高性能微波暗室技术设计中，由于静区指标较高，采用一般的几何光学技术不能进行准确计算，因此需采用几何绕射理论技术。
In design of anechoic chamber with higher quality, when requirements of quiet zone index are higher, it must use the geometrical theory of diffraction instead of the geometrical optics for accuracy.
在高性能微波暗室技术设计中，由于静区指标较高，采用一般的几何光学技术不能进行准确计算，因此需采用几何绕射理论技术。
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