The precession vibration and {TAIL ~ the torsional vibration} at a high speed rotation can be suppressed because of {HEAD ~ the small backlash} 
The precession vibration and { TAIL ~ the torsional vibration } at a high speed rotation can be suppressed because of { HEAD ~ the small backlash }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD