The outer porous portion is configured for providing {TAIL ~ a fluid communication pathway} between {HEAD ~ the pressure structure} and the inner porous portion that supports a fast and homogenous pressure response 
The outer porous portion is configured for providing { TAIL ~ a fluid communication pathway } between { HEAD ~ the pressure structure } and the inner porous portion that supports a fast and homogenous pressure response
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH