Thus, for instance, {TAIL ~ both the Venturi effect} and the Coanda effect may be used to increase {HEAD ~ the efficiency} of the overall system 
Thus , for instance , { TAIL ~ both the Venturi effect } and the Coanda effect may be used to increase { HEAD ~ the efficiency } of the overall system
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH