stingsstipstirred tank backmix reactorstirring rodstitchstoichiometrystorage modulusstraightstrainstrain energystrain gaugestrain ratestrandstray currentstreakstreamlinestrengthstressstress concentrationstress corrosion crackingstress crack resistancestress crackingstress crystallizationstress decaystress fracturingstress grandientstress induced crystallizationstress intensity factorstress relaxationstress relievingstress strain behaviourstress transformation matrixstressed statestretch blow moldingstretch filmstretching vibrationstripstripping sectionstroke lengthstructuralstructural foamstructural foam injection moldingstructurestructured polymerstructured wall pipestrutstudstyrene monomersublimationsubmarine gate