{HEAD ~ The cylinder} is filled with a liquid or solid polymer material having {TAIL ~ a high bulk modulus} of compressibility which gives the spring volumetric stiffness 
{ HEAD ~ The cylinder } is filled with a liquid or solid polymer material having { TAIL ~ a high bulk modulus } of compressibility which gives the spring volumetric stiffness
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH