A couple of weeks working through some analysis of the problem, including some simple mathematical models of how the problem domain scales over time, and how the solution would have to compensate.
在几周内完成对问题的分析，包括用一些简单的数学模型分析了问题域随时间的延伸会产生的问题，以及相应的弥补措施。
This paper makes the comprehensive evaluation of the quality of pile foundation through time domain, frequency domain and entropy spectrum, in which spectrum analysis is a new method.
通过时域、频域、熵谱对桩基质量进行综合评价，熵谱是一种新的谱分析方法，并通过实例分析，说明了在评价桩基质量时熵谱的优点。
Through the thorough analysis and demonstration, it is pointed out that the use of time domain parameter identification and load identification is necessary and feasible.
经全面分析论证指出，采用时域识别方法，对其进行参数识别和载荷识别是必要的和可行的。
The frequency and amplitude and phase of discrete spectral lines can be calculated through two DFT analyses one after another, which is one complex time domain signal analysis virtually.
相继两次DFT分析（实为一次复时域信号分析）可精确确定诸分立谱线的频率、幅度与相位。
Through the analysis of SAPF in time domain, the internal model of current predictive control is obtained and the current loop of SAPF is studied and realized.
通过对并联有源电力滤波器的时域分析，得到了电流预测控制的内部模型结构，并根据预测控制理论对并联有源电力滤波器的电流控制环进行了研究和实现。
Besides, at the non-drive-end of the primary shaft, some mechanical fitting in the bearing case were detected loosen, through spectrum-zoom analysis and waveform comparison in the time-domain.
另外，由转频附近细化谱分析及时域波形比较，发现输入轴非电机端轴承座内机件还有径向配合松动故障。
Besides, at the non-drive-end of the primary shaft, some mechanical fitting in the bearing case were detected loosen, through spectrum-zoom analysis and waveform comparison in the time-domain.
另外，由转频附近细化谱分析及时域波形比较，发现输入轴非电机端轴承座内机件还有径向配合松动故障。
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