A piston coupled to a piston rod is fitted in {TAIL ~ a sealed cylinder} in which {HEAD ~ oil} is contained 
in is contained
A piston coupled to a piston rod is fitted in { TAIL ~ a sealed cylinder } in which { HEAD ~ oil } is contained
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD REL REL