This means that {TAIL ~ the arrangement} can regulate any displacement volume or {HEAD ~ displacement flow} dynamically and continuously 
This means that { TAIL ~ the arrangement } can regulate any displacement volume or { HEAD ~ displacement flow } dynamically and continuously
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH