Upon adjusting {HEAD ~ the length SL} of {TAIL ~ the slot} 11, therefore, an intense electromagnetic field is excited in the slot 11 due to the magnetic field generated by the MS line 8 
of
Upon adjusting { HEAD ~ the length SL } of { TAIL ~ the slot } 11 , therefore , an intense electromagnetic field is excited in the slot 11 due to the magnetic field generated by the MS line 8
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH