以下为句子列表：
英文: A time-frequency analysis method is presented to solve paper machine press section bearing vibration signals of unstable and complication, applying wavelet function to the unstable signals for faulty bearing according to paper machine press section roll b
中文: 摘要针对纸机压榨部滚动轴承尺寸大响应弱、运转速度低、低频信号容易淹没、调制源多、振动信号非平稳性等特点而导致常规的傅立叶分析诊断故障效果不佳的情况，提出了一种应用小波变换的时频分析方法，对振动信号进行分解和重构处理，获得了振动信号在不同的频段的分量，提取相应特征频段重构分量的功率谱的频域统计值作为特征参数，从而实现对轴承故障诊断。
更详细...
英文: In addition, the high and low frequency information of the adjacent channel can be transformed to the other seismic channel by taking the advantage of better similarity of subsection time-frequency analysis of seismic data, as well as the capability of le
中文: 同时，利用地震资料分段时－频分析的相似性较好和小波网络学习、训练及记忆能力较强的特点，可以较好地把井旁道的高、低频信息转换到相邻道上。
更详细...
英文: The method and theory of time-frequency analysis based on short-time Fourier Transformation are studied and the wave arrival points of easy component are determined by making software and using time-frequency analysis.
中文: 研究了基于短时傅里叶变换的时频分析方法理论，并通过编制软件利用时频分析方法确定各组分波的波至点。
更详细...
英文: The results show that the method of time-frequency analysis can be used to extract acoustic logging data for solving the practical problems related to time and frequency.
中文: 分析结果显示，时频分析方法应用于声波测井信息提取可以解决时间和频率相关的实际问题。
更详细...
英文: The time series nonstationarity has relation to system and time scale with which researchers are concerned, and the research of nonstationarity focuses on the fields of the statistics, nonlinear science and time-frequency analysis now.
中文: 摘要时间序列非平稳度不仅是系统特性的反映，还与研究者感兴趣的时间尺度有关，目前相关的研究集中在统计学，非线性科学和时频分析领域。
更详细...
|
