Its molecular structure is made up of a five member, unsaturated lactone ring with two hydroxyl groups.
其分子结构是由五个成员国，不饱和内酯环两个羟基。
It is show that the complexes of galloyl type hydrolysable tannins with aluminum are formed which involve five-member ring stably formed adjacent hydroxyl groups in galloyl to aluminum atoms.
研究表明，棓酰类多元酚可与铝形成络合物，其络合物是铝和棓酰基中苯三酚的邻位二羟基形成的，它是稳定的五员螯合环结构；
It is show that the complexes of galloyl type hydrolysable tannins with aluminum are formed which involve five-member ring stably formed adjacent hydroxyl groups in galloyl to aluminum atoms.
研究表明，棓酰类多元酚可与铝形成络合物，其络合物是铝和棓酰基中苯三酚的邻位二羟基形成的，它是稳定的五员螯合环结构；
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