Adopting prior and posterior deposal system met the demands of filtrating,removing ammonia,rising oxygen,sterilizing and antisepsis.
采用前、后处理系统来满足过滤、除氨氮、杀菌消毒、增氧等需要。
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You surely encountered this in a science textbook at some point--but to refresh your memory: in 1952 Stanley Miller and Harold Urey simulated the conditions of early earth by sealing water, methane, ammonia, and hydrogen in a glass flask.
你肯定科学课本上见过它,不过为了唤起回忆还是说一下:1952年,Stanley Miller 和Harold Urey 将水、甲烷、
气和氢气封如玻璃烧瓶内,来模拟地球早期
情况。