聚二烯基本分子结构是一良好的燃烧剂。
The polydiene basic molecular structure is an excellent fuel.
对异戊二烯及其影响因子进行了详细研究。
A minute study on isoprene and its affecting factors is made.
而异戊二烯必须极其纯净才能生产出合成橡胶。
Isoprene needs to be extremely pure to make synthetic rubber.
采用本实验确定的工艺，制得蟾皮总二烯内酯含量为53.90%，收率为0.23%。
The content of total bufadienolides was 53.90%, the extracting rate was 0.23%.
石墨烯是一种只有一个原子厚度的二维薄碳片。
Graphene is a two-dimensional sheet of carbon that is only one atom thick.
石墨烯是一种只有一个原子厚度的二维薄碳片。
Graphene is a two-dimensional sheet of carbon that is only one atom thick.
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