It was a quantitative target for describing of self-purification capacity of water environment of area.
它是描述一个地区水环境自净能力大小的定量指标。
Many minerals in nature have the self-purification capacity to hold and stabilize deleterious contaminant, which can be used to deal with heavy metal contaminants.
自然界中的许多矿物自身赋有容纳和稳定有害物质的自净化能力，可用于重金属类污染物的治理。
In this paper a study of the self-purification capacity of the sea area near Qingdao has been made by using a numerical model.
本文通过数值计算对青岛近海海域的自净能力进行了研究。
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