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关注:1
2013-05-23 12:21
求翻译:(a) What are the chemical structures of cis- and trans-polybutadiene, and (b) the 1,2- and 3,4-structures of polyisoprene?是什么意思?![]() ![]() (a) What are the chemical structures of cis- and trans-polybutadiene, and (b) the 1,2- and 3,4-structures of polyisoprene?
问题补充: |
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