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凈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凈化能力,可用于重金属类污染物的治理。
According to the calculating principle of wind scale and earthquake magnitude, the concept of the magnitude of self-purification capacity of water environment of area was put forward.