a rotor motor which inputs/outputs electric power generated by {HEAD ~ the electromagnetic effect} of the first rotor and {TAIL ~ the second rotor}, and which outputs at least a part of power from the internal combustion engine to the drive shaft 
a rotor motor which inputs / outputs electric power generated by { HEAD ~ the electromagnetic effect } of the first rotor and { TAIL ~ the second rotor } , and which outputs at least a part of power from the internal combustion engine to the drive shaft
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH