actuator means associated with the member, for applying stress to the member in such a manner as to produce a strain opposite in {TAIL ~ sense} to that induced by the external stress forces acting on {HEAD ~ the structure} 
actuator means associated with the member , for applying stress to the member in such a manner as to produce a strain opposite in { TAIL ~ sense } to that induced by the external stress forces acting on { HEAD ~ the structure }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD