The application of alkyl dithiophosphate accelerator in NR based tread compound was investigated.
研究烷基二硫代磷酸盐促进剂
NR
胶中的应用。
The application of alkyl dithiophosphate accelerator in NR based tread compound was investigated.
研究烷基二硫代磷酸盐促进剂
NR
胶中的应用。
The back tyre tread is worn a little.
后车

有点磨损。
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