Firm balls and toys with slow rebound characteristics
作者： Tony Pearce
DOI:
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摘要: Toys are disclosed having a skin and non-foam core. The core is firm but deformable has shape memory. toy can be deformed by squeezing or stretching will slowly return to its original shape. may an elastomer gel particulate material. not run flow under own weight at room temperature so breaks in the of no concern.
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