然后根据水下冲击波的特征，分析了水下爆炸冲击波数据记录仪的测试原理，介绍了两种模拟实际水下爆炸冲击波信号的测试方法。
Then, on the basis of the characterization of shock wave and measuring principles of the data recorder, two measuring methods for simulating actual shock wave are introduced in the pa - per.
结果：头胸导联所记录到的Q波数及Q波幅度均显著低于常规导联心电图。
Results: Q wave amplitude and Q wave numbers recorded in Head-Chest leads were lower than those recorded by Routine lead ECG.
在频率-波数域中，详细地推导出了对地震记录进行三维偏移归位的全部计算公式，并给出了能在中小型计算机上实施的程序结构和流程。
Formulas for 3d migration of seismic data in frequency-wave number domain are derived. The software and procedure used on medium -sized computer and minicomputer are given.
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