wherein the first motor generator torque controlling {HEAD ~ means} controls {TAIL ~ the torque} of the first motor generator so that the fluctuation of variation in the rotation speed of the internal combustion engine is reduced, when the rotation speed of the internal combustion engine is in a resonance frequency band 
controls
wherein the first motor generator torque controlling { HEAD ~ means } controls { TAIL ~ the torque } of the first motor generator so that the fluctuation of variation in the rotation speed of the internal combustion engine is reduced , when the rotation speed of the internal combustion engine is in a resonance frequency band
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH