The scanning electron microscope (SEM) and power spectrum are used to research the microstructure and the chemical composition of the black pottery.
用扫描电镜（SEM）和能谱仪对龙山黑陶的显微结构和化学组成进行研究。
Estimate the signal power spectrum from recorded traces in neighbouring pairs.
其二是利用两两毗邻的记录道来估计信号功率谱。
Auto power spectrum of the periodic and quasi-periodic solution has been obtained.
得到了周期解和准周期解的自相关功率谱线。
Experiments prove that the method can accurately estimate the noise power spectrum.
实验证明该方法能够相当准确地估计出噪声功率。
A method of simulating vessel's radiated noise with specified power spectrum is presented.
给出了一种能够模拟具有指定功率谱特征的舰船辐射噪声的方法。
The power spectrum of the noise and signal are estimated by the average smooth periodogram method.
用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。
The instantaneous power spectrum of nonstationary random vibration signals is discussed in this paper.
本文研究了非平稳随机振动信号的瞬时功率谱。
The auto power spectrum curves of the dry parallel reactor are obtained from the prototype dynamic test.
通过干式空心并联电抗器的现场原型动力试验，得到该电抗器各方向的自功率谱曲线。
Compared with conventional power spectrum model, the rationality of GSSGM model is examined and certified.
通过与常用功率谱模型的比较，验证了该模型的合理性。
Multitarget detection using a real time joint transform correlator with power spectrum subtraction is proposed.
提出一种使用功率谱相减的实时联合变换相关器作多目标检测。
It is an effective and reliable method to analyze signals and diagnose gearbox by Hilbert power spectrum analysis.
作包络功率谱分析，能有效地对齿轮箱故障进行诊断分析。
Effects of cinnarizine on the REG power spectrum and nystagmus of rabbits during rotatory stimulation were studied.
研究了脑益嗪对受前庭刺激家兔的脑血流图功率谱和眼震颤的影响。
Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
上式表明：功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。
A compact power spectrum collection lens (PSCL) system for the laser diffraction particle size analyzer was proposed.
提出一种激光粒度仪短筒功率谱采集透镜(PSCL)系统设计方案。
The frequency response function and the power spectrum function for stationary and non-stationary inputs are obtained.
求出了频率响应函数以及输入为平稳和非平稳情况下的功率谱函数。
We can get frequency response, power spectrum density (PSD), modal coordinates, etc. by modal analysis module of ADAMS.
利用ADAMS做模态分析，可以求得频率响应、功率谱密度(PSD)、模态坐标等信息。
The relation between instantaneous acceleration power spectrum and instantaneous displacement power spectrum is presented.
建立了非平稳随机响应瞬时加速度功率谱与瞬时位移功率谱之间的关系；
The amplitude distribution, power spectrum and parameters are discussed briefly based on the return at a high grazing angle.
随后以大擦地角的回波信号为例，简要分析了杂波模型的幅度分布、功率谱和参数的特性。
Using frequency spectrum analysis of phase function to calculate its auto power spectrum can reflect its frequency structure.
利用相函数的频谱分析求其自功率谱，可以反映它的频率结构。
Through power spectrum analysis, there are three obvious common periods, 18 months, 26 months and 47 months, for ENSO events.
功率谱分析显示ENSO的冷事件和暖事件有三个共同的明显周期，即18个月、26个月和47个月；
Cepstrum analysis is introduced to order analysis in efforts to identify the periodic information hidden in the power spectrum.
将倒频分析引入阶次分析中，以检测出功率谱中难以辨识的周期性。
This thesis studies adaptive algorithms and smart antenna, and selects the power spectrum inversion method to implement with FPGA.
本文对自适应算法以及智能天线等技术进行了研究学习，并选取功率谱倒置算法进行了FPGA的设计实现。
P. Burg in 1967 is an improved method for estimating power spectrum, which can effectively improve the resolution of a power spectrum.
伯格（1967）提出的最大熵谱分析方法是一种改进的功率谱估算方法，它可以有效地提高功率谱的分辨率。
That is, there exists an optimal threshold, which lies in the average gray of the joint transform power spectrum by computer simulation.
并通过计算机模拟，确定出该最佳阈值位于联合变换功率谱的平均灰度值附近。
The Fourier transform power spectrum of input object can be obtained when the input image is placed at the front or back of the hololens.
将输入图像置于这种全息透镜的前面或后面，均能得到物体的傅里叶变换功率谱。
With auto-power spectrum and cepstrum, this paper diagnoses the unusual noise source of the gear box, and finds an impaired gear of the box.
本文采用自功率谱、逆频谱方法对拖拉机变速箱异常噪声源进行了诊断，找出了产生异常噪声的根源。
Analytic formulas for combination coefficients are deduced in this paper under the assumption that the input power spectrum is C-P spectrum.
本文在输入地震动功率谱为c - P谱的假设下推导了计算组合系数的解析公式。
The continuous phase modulation has the constant amplitude and its phase is continuous, which make the signal has a very good power spectrum.
连续相位调制由于其具有恒定包络幅度且对任意的调制信息序列能保持信号的相位连续，从而能够有效的改进信号的频谱特性。
In this paper, in order to achieve better correlation result, the nonlinear processing of joint transform power spectrum (JTPS) is put forward.
为了得到更好的相关结果，本文提出对联合功率谱进行非线性处理的方法。
In this paper, in order to achieve better correlation result, the nonlinear processing of joint transform power spectrum (JTPS) is put forward.
为了得到更好的相关结果，本文提出对联合功率谱进行非线性处理的方法。
应用推荐