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关环

网络ring-closing; have an aura about them

关环

关环

ring-closing

）、开环（ring-opening）和关环（ring-closing）的步骤组成。Zincke醛 [编辑] 2007年“重新发现” [编辑] 2006年和2007年，日 …

have an aura about them

english and physics ... ecstatic 开心地疯掉了 have an aura about them 关环 derogatory term 贬义词 ...

2

The synthetic method is novel in the direct synthesis of amide surfactants by vacuum -amphoteric method without ring closing reactions.

本发明方法不经过关环过程，创新性地采用真空 ―两性化法直接合成酰胺型表面活性剂。

3

The Cyclic Reaction of Dicoumarin with Thiophosphoryl Chloride

双香豆素与三氯硫磷的关环反应

4

The Improvement of the Cyclization Step in the Stepwise Synthesis of calix [4 ]arenes

逐步法合成杯 [4 ]芳烃关环反应的改进

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