The basic properties of SBR1721 and their effects on performance of tread compound of PCR tire were investigated and compared to SBR1712.
对SBR17 21基本性能及对轿车轮胎胎面胶性能的影响进行研究，并与SBR1712进行比较。
The basic properties of SBR1721 and their effects on performance of tread compound of PCR tire were investigated and compared to SBR1712.
对SBR17 21基本性能及对轿车轮胎胎面胶性能的影响进行研究，并与SBR1712进行比较。
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