• 1. self-purification: 自净 | 自然净化 | 净作用 | 作用
• 2. environmental self-purification: 环境自净 | 环境自争 | 环境自净作用 | 环境的自净
• 3. self-purification of water body: 水体自净 | 自净作用

更多释义

• 1.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。
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• 2.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。
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• 3.To improve the self-purification ability and pollution situation of river water, control the pollution load and ensure the river basic flow are two important ways.
  在控制污染负荷排放的同时，也要保证河流基本流量，提高水体自净能力，改善渭河水体的污染现状。
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