中文摘要：

研究了金属多孔材料最大气泡孔径（dmax）与多次通过法表征的过滤精度（d）的关系。结果表明，二者之间不是简单的0.2的倍数关系，通过回归分析，得到了具有幂函数关系的经验公式：d=cdmax^2/3。

英文摘要：

The relationship between maximum pore size（dmax） and filter rating（d） which characterized by multiple pass method was investigated. The results show that this relationship isn＇t as simple as the multiple of 0.2, and the research gained an experimental expresstion （d=cdmax^2/3） between maximum pore size and filter rating by regression analysis.