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一、序言在过去十五年中,评定地震危险性的方法已经达到相当成熟的水平。一些经验方法已为研究工作者和实际工程师当作常规方法来使用。在大多数重大工程设计中
I. Preface In the past 15 years, the method of assessing the earthquake risk has reached a quite mature level. Some empirical approaches have been used by researchers and actual engineers as routine methods. In most major engineering design