用英文对下面的文字进行润色：Pressure drop is one of the most important parameters for energy wheels and air cleaners and it is necessary to investigate it theoretically and experimentally for their desigh In this s

"The pressure drop is a crucial parameter for both energy wheels and air cleaners, and it is essential to conduct theoretical and experimental investigations to aid in their design. In this study, we focused on examining the pressure drop in a fiber-powder composite material that possessed a porous structure."