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hypolimnion n.深水缺氧層。

hypomania

In many lakes in summer that is a warm low - density layer ( epilimnion ) lying above a colder denser layer ( the hypolimnion ) , the zone of rapid temperature change between the two layers being celled the thermocline 夏季,多數湖中溫暖的低密度水層(湖面溫水層)在寒冷的較高密度水層(湖底凈水層)之上,中間夾有溫度改變較快的水層(變溫層) 。