The viscosity of {HEAD ~ the fluid} encapsulated within {TAIL ~ the capsule} controls the damping characteristic 
The viscosity of { HEAD ~ the fluid } encapsulated within { TAIL ~ the capsule } controls the damping characteristic
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH