“Hangenberg event”的概念、定义、翻译、参考文献-科学参考

单词	Hangenberg event
释义	Hangenberg event Encyclopedia 理学亨根贝格事件释 Hangenberg event亨根贝格事件泥盆—石炭纪之交（约3.59亿年前）发生的一次生物危机事件。又称泥盆纪末生物灭绝事件。
随便看	concentration concentration cell concentration Clarke concentration class concentration coefficient concentration compactness lemma I concentration compactness lemma II concentration compactness lemma Ⅱ concentration compactness principle concentration-compactness principle concentration constant concentration control coefficient concentration control coefficients，CCCs concentration control of pollutant concentration criterion of ore concentration cylinder concentration-dependent antibiotics concentration-dependent antimicrobial agents concentration direct reading concentration ellipse concentration equipment concentration factor concentration for 50% of maximal effect concentration function concentration gradient field

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