The method comprises the first step of heating with electromagnetic radiation a fluid restrictor, followed by the step of {HEAD ~ flowing fluid} through {TAIL ~ the restrictor} 
through
The method comprises the first step of heating with electromagnetic radiation a fluid restrictor , followed by the step of { HEAD ~ flowing fluid } through { TAIL ~ the restrictor }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL