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