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The main causes resulting in this situation are intense compaction, pressure solution, cementation, filling, carbonatization and recrystallization, but...

文中还论证了地表样品中识别埋藏古溶蚀的标志。

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High purity amygdalin was obtained from apricot kernel by the process of enzyme destruction, defatting, solvents extraction and recrystallization.

杏仁经灭酶、脱脂、结晶,制得高纯杏仁苷。

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METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.

方法将两羟基用缩酮保护,再用正己烷结晶分离纯化。

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The calcite deposits are derived from the recrystallization of the carbonatite as a result of the weathering, eluviation of the fault, and the thermal contact activity and the metamorphism.

方解石矿有三个显著特征:即白色、块大、致密。

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coenology, coenomonoecia, Coenomyidae, Coenopteridales, coenosarc, coenosis, coenosium, coenosorus, coenospecies, coenosporangium,

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3G, 401(K), a,

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