查询词典 spectral analysis

For two continuous casting billets of typical stainless sheets (304 and 0Cr13), three positions including the edge, 1/2 and 1/4 along the thickness were spectroscopically analyzed through successive layer and multiple point modes. The uniformity of lumpish continuous casting billet sample was studied by statistical analysis and the major factors influencing the accuracy of spectral analysis were discussed.

对于304和0Cr13两个典型不锈钢品种的连铸坯，沿厚度方向分别取边缘、1/2、1/4三个不同部位进行逐层、多点光谱分析，并利用统计分析手段，考察了连铸坯块状试样的均匀性，分析了影响钢材成品光谱分析准确度的主要因素。

It is indicated by the performance analysis that the approach here has comparative bias and variance as the approach of discrete prolate spheroidal sequence multitaper spectral analysis.

性能分析的结果表明，此方法与离散长球序列多窗口谱分析方法具有相当的估计偏差与方差性能。

Aiming at these problems, we have designed the processing workflow to effectively suppress the surface Wave interference, regular interference, high energy interference, and other random noise interference. The treatment clue was from thick to thin. Firstly, the spectral analysis method was used to establish macroscopic velocity field. Then, the ray tomography method was used to enhance the accuracy of velocity analysis and to establish a more accurate velocity model. Finally, the finite difference pre-stack depth migration on method in -k domain was adopted to solve the imaging problem of subsalt and salt dome flank.

通过合理组织处理流程，有效压制了面波干扰、规则于扰、强能量干扰和随机噪声干扰；采用由粗到细的思路，先利用谱分析方法建立宏现速度场，再利用射线层析成像方法提高速度分析精度，建立了较为准确的速度模型；利用频率－空间域有限差分叠前深度偏移解决了盐下及盐丘侧翼的成像问题。

The dynamic analysis of the vibration system with subsectional linear springs is carried out by means of spectral analysis.

应用非线性谱分析法对分段线性弹簧系统在随机载荷作用下的动力响应进行分析。

The nuclear of the method is the newly developed HHT for nonstationary and nonlinear time series analysis, which consists of the Empirical Mode Decomposition and Hilbert Spectral Analysis.

该方法对桥梁结构健康性的最终判断依据是基于数据的非线性特征、自由振动和强迫振动的频率对比、桥梁对轻荷载及重荷载的响应。

Theory analysis and experimental result indicate that the higher order spectral analysis can deal effectively with nonstationary and non-Gaussian problems in the actual signal.

理论分析及实验结果表明，高阶谱分析能有效处理实际信号中的非平稳非高斯问题。

HPLC, and its chemical structure elucidated on the basis of spectral analysis. A new method of RP-HPLC was established for the analysis of the contents of oleuropein, which is the main effective constituent. The contents of oleuropein in different positions of Syringa pubescens Turcz.

建立了测定橄榄苦甙含量的RP-HPLC法，并且利用这种方法测定了小叶丁香的不同部位——花、叶、茎和根之中的橄榄苦甙的含量；测定了不同条件下培养所得的培养物中橄榄苦甙的含量；测定了伴生菌培养物中橄榄苦甙的含量。

This experiment is the typical comprehensive nature, the designed experiment, it synthesized the volumetric analysis elementary operation eo skill, the spectral analysis, knowledge and so on chemical literature consult method, and has designed, the zetetic characteristic.

该实验是典型的综合性、设计性实验，它综合了容量分析基本操作技巧、光谱分析、化学文献查阅方法等知识，并具有设计性、探究性的特点。

The results showed that the application of time-frequency analysis to surface myoelectric signal during dynamic contraction may obtain more information that was not available using the traditional spectral analysis techniques.

研究表明将时频分析技术应用于动态收缩期间的表面肌电信号可以增加用传统的频谱分析技术不能得到的信息。

In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics of fault arc ,and extracted the sound signature of early fault arc by using power spectrum analysis.

为了避免或减少故障电弧的危害，笔者建立了故障电弧探测试验系统，采用功率谱分析的方法对故障电弧的早期弧声特性进行了试验研究，提取出故障电弧的早期弧声特征信息。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。