In this case, each of {HEAD ~ the surfaces} 26 of {TAIL ~ the rotor} 20 is provided with pockets 28 integrally cast in the surfaces 26 
of
In this case , each of { HEAD ~ the surfaces } 26 of { TAIL ~ the rotor } 20 is provided with pockets 28 integrally cast in the surfaces 26
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH