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