Fossil evidence suggests that small and medium sized animals were more likely to survive the mass extinction than larger species.
化石证据显示，中小型动物比较大型物种更有可能在大灭绝中幸存下来。
When the biological filter bed is stably treating with domestic wastewater, shapes of biofilm and distributing characters of microorganism species on the external of medium were studied.
研究了生物渗滤床处理生活污水稳定运行时介质表面的生物膜形态和微生物种群分布特征，分析了生物膜及微生物种群的空间变化规律。
Using this medium, the same species may be grouped into species group, and it is possible to identify the names of species group directly on the plate.
应用此培养基，可以直接在培养皿中归并类似的菌种，减少挑菌的工作量。
应用推荐