This phase of the filtration process is called nonstationary filtration. 这个过滤阶段称为非稳态过滤。
A new concept of the microcosmic analysis method and the macroscopic analysis method are proposed to investigate the pressure drop of the dynamic filtration of filters. 提出用于建立过滤层非稳态过滤压力损失模型的微观分析法和宏观分析法新概念。