不是每个人都会受益：它的影响将是地震等级的。
在其有效的范围内，每一种都可以换算成里氏地震等级。
In its range of validity each is equivalent to the Richter magnitude.
根据地震等级和风力等级的计算原理，提出了区域水环境自净能力等级的概念。
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.
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