Thus, no influence is exerted on {HEAD ~ rotation} of the rotatable electrode means by {TAIL ~ frictional force} caused by such a collector or brush 
by
Thus , no influence is exerted on { HEAD ~ rotation } of the rotatable electrode means by { TAIL ~ frictional force } caused by such a collector or brush
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH