以下为句子列表：
英文: The algorithm used in the past was usually based on Fourier transform, but there are clearly limitations in the method, because the seismic amplitude spectrum that it evaluated is the function of time windows.
中文: 如果所选时窗过短，振幅谱会与变换窗函数褶积，失去频率的局部化特徵，而且过短的时窗会使子波的旁瓣呈现为单一反射的假像。
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英文: The paper expounds a way to get stress amplitude spectrum of main girders of overhead traveling crane through computer simulation combining virtual prototype technology and computer random simulation.
中文: 摘要本文将虚拟样机技术与计算机随机模拟方法结合，探讨了通过计算机仿真的方法获得桥式起重机主梁应力幅谱的基本途径。
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英文: Used Fourier transforming the nuclear logs, its vertical resolution can be achieved from analyzing the changes of amplitude spectrum slope.
中文: 摘要对核测井曲线进行付氏变换，其纵向分辨率可以从分析振幅谱斜率变化中获得。
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