So studying of the envelope function of the practical ground motion acceleration records is very important.
因此，研究实际地震动时程强度包络函数的特性，对合理模拟地震动时程具有重要的意义。
A time history is synthesized from this amplitude spectrum and a random phase spectrum, combined with an envelope function.
据此幅值谱和一个随机相位谱，并与一个时程包络函数结合，合成一个子震时程。
The response from the server is sent back as another XML-encoded, SOAP envelope, this time with the return value from the function.
服务器通过另一个 XML 编码的 SOAP 信封返回响应，这一次是函数的返回值。
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