{TAIL ~ a multiplicity} of bladed interrupter elements disposed longitudinally relative to one another in the direction of flow of {HEAD ~ the fluid}, 
{ TAIL ~ a multiplicity } of bladed interrupter elements disposed longitudinally relative to one another in the direction of flow of { HEAD ~ the fluid } ,
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH