This fact is clearly demonstrated by the ready formation of polyethylidene a nd polybenzylidene from (highly reactive) diazoethane.
这个事实已由聚乙叉和聚苄叉的快速形成而清楚的证明。
This fact is clearly demonstrated by the ready formation of polyethylidene a nd polybenzylidene from (highly reactive) diazoethane.
这个事实已由聚乙叉和聚苄叉的快速形成而清楚的证明。
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