{HEAD ~ A magnetic sample} is movably arranged in {TAIL ~ the hollow body} and can be acted upon with a working pressure by the fluid  
{ HEAD ~ A magnetic sample } is movably arranged in { TAIL ~ the hollow body } and can be acted upon with a working pressure by the fluid
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH