The method 2 wherein {TAIL ~ the composite film} is wrapped around a pipe containing {HEAD ~ a volume} of water 
The method 2 wherein { TAIL ~ the composite film } is wrapped around a pipe containing { HEAD ~ a volume } of water
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH