Further, it is possible to reduce {HEAD ~ the change frequency} of {TAIL ~ chemical solution} and decrease the amounts of components of chemical solution supplemented 
of
Further , it is possible to reduce { HEAD ~ the change frequency } of { TAIL ~ chemical solution } and decrease the amounts of components of chemical solution supplemented
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH