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