Streamlining the profile of the transition section of {HEAD ~ the plastic tube}, which already has {TAIL ~ ultra smooth surface characteristics}, provides a flow passage that substantially eliminates areas of potential turbulence 
Streamlining the profile of the transition section of { HEAD ~ the plastic tube } , which already has { TAIL ~ ultra smooth surface characteristics } , provides a flow passage that substantially eliminates areas of potential turbulence
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH