{HEAD ~ The piezoelectric system} is effective to move {TAIL ~ the flow control member} 128, 129 between the open and closed positions 
is effective to move
{ HEAD ~ The piezoelectric system } is effective to move { TAIL ~ the flow control member } 128 , 129 between the open and closed positions
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH