N 8 atom could form H - bond to the acceptor as a free base.

N8原子可能以游离碱形式与受体发生氢键作用.

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Objective To study the concern of free base and heart brain blood vessel disease.

目的:探讨自由基与心脑血管疾病发病的关系.

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About 31 meters high, tower free base, the tower directly from the ground.

高约三十一米, 塔无基座, 塔身直接出自地面.

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