| 英文名称: | | alkenes, ethylene-manuf.-by-product dicyclopentadiene-conc., polymers with 1-me | | thyl-4-(1-methylethenyl)cyclohexene and steam-cracked petroleum distillates | | alkenes, ethylene-manuf.-by-productdicyclopentadiene-conc., polymers with1-methyl-4-(1-methylethenyl)cyclohexene and steam-cracked petroleumdistillates |
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