The body and {HEAD ~ the shroud} define {TAIL ~ an impeller chamber} including a radially inner surface and a radially outer surface 
define
The body and { HEAD ~ the shroud } define { TAIL ~ an impeller chamber } including a radially inner surface and a radially outer surface
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH