| 释义 |
GR-S rubber GR-S rubber[¦jē¦är′es ‚rəb·ər] (organic chemistry) Former designation for general-purpose synthetic rubbers formed by copolymerization of emulsions of styrene and butadiene; used in tires and other rubber products; previously also known as Buna-S, currently known as SBR (styrene-butadiene rubber). |