把效用函数引入信息安全风险领域，利用其反函数，定义绝对损失效应和相对损失效应，用以度量安全风险。
Utility function was introduced into security risk area, and its inverse function is used to define absolute loss effect and relative loss effect as measure of risk.
这些核电站能在里氏9.0级的地震中幸存下来，即相对损失较小。 而且还要考虑到地震规模的对数性质，这次地震的强度是设计强度的15倍多，这似乎是一个奇迹。
That they survived relatively unscathed through a magnitude 9.0 earthquake—ie, one that, given the scale's logarithmic nature, was approximately 15 times more powerful—seems remarkable.
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