通过对循环谱密度分析方法的特性分析，指出应用循环谱密度分析方法可以在循环频率域有效提取出滚动轴承的冲击故障频率。
Based on the analytic method of cyclic spectrum density, the paper pointed out that the impact frequency could be extracted effectively with the help of scanning cyclic frequency domain.
方法利用低密度脂蛋白作用人血管内皮细胞系ecv304，通过基因芯片分析人信号传导相关蛋白的表达谱。
Methods Microarray analysis on human signal transduction associated proteins was applied to profile changes in gene expression of human ECV304 endothelial cells induced by low density lipoprotein.
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。
We can get frequency response, power spectrum density (PSD), modal coordinates, etc. by modal analysis module of ADAMS.
工程结构的随机地震反应分析，常在频域中用到地震动的功率谱密度函数。
The power spectral density function of earthquake motion is usually used for the random response analysis of engineering structures in the frequency domain.
通过回归分析的方法对标准分级道路功率谱密度与相应国际平整度指数之间的关系进行了研究。
The correlation between the standard classified road power spectral density (PSD) and international roughness index (IRI) was discussed by using regressive analysis.
目的运用低密度表达谱芯片检测人脑原发胶质瘤组织中DNA损伤修复基因的表达情况，进一步分析其表达变化的意义。
Objectives to detect the expression of DNA repair genes in primary glioma tissues by low-density array, and to analyze the significance of the expression.
在对数据进行清理的基础上，分析了各站坐标分量噪声的功率谱密度，计算了表征各分量的噪声特性的谱指数。
On the basis of data processing, we analyze the power spectrum density of coordinate component noise at each site and calculate the spectral indexes manifesting the noise property of each component.
分析发现，合法流量和包含攻击包流量采样在功率谱密度上存在显著差异。
With its attacking traffic pattern, obvious difference was found between the power spectrum density (PSD) of legitimate and attack traffic samples.
功率谱密度（PSD）函数在阵风载荷飞行试验数据分析中占有重要的地位。
The power spectrum density (PSD) function is important in gust load flight experiment data analysis.
本文对用光学粒子计数器在飞机上测量的大气气溶胶数密度-粒度谱分布进行了分析研究。
Size distributions of number concentration of atmospheric aerosol measured by optical particle counter aboarded on aircraft were analysed.
利用极谱二电极系统测定海水中的镉、铅，测定结果的精密度、准确度均符合分析要求。
Cadmium and Lead in the sea water are determined by two electrode systems of polarograms, and the accuracy and precision of determination meets the analysis request.
第三部分对随机振动功率谱密度误差作简略的分析。
The third part analyzes briefly the statistical errors in the power spectral density me...
从理论上详细分析了光纤环形腔有内相位调制时的输出光电流功率谱密度函数，该理论对任意相干长度的输入激光光源都是有效的。
The power density spectrum of an inner-phase-modulated optical fiber resonator is analyzed theoretically and experimentally, which is valid for any source coherence time.
目的：采用组织多谱勒成像（TDI）、彩色室壁运动分析（CK）及声学密度测定（AD）评价心梗患者非梗塞区心肌功能的改变。
Purpose: To evaluate the clinical value of tissue doppler imaging (TDI), color kinesis(CK) and acoustic densitometry (AD) in the assessment of non-infarcted regional myocardial function.
从雷达杂波的分布特性出发，分析了杂波的解析模型，阐述了雷达杂波幅度的概率密度分布及其功率谱密度分布。
Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.
以镜架支撑安装基面上实测的地面振动速度功率谱密度为激励，运用ANSYS有限元分析软件的PSD分析模块，对该结构系统的随机振动响应进行了分析计算。
The PSD measured on the install base level of the mount as the excitation, the random vibration response of the mount was analyzed with the PSD module of ANSYS.
运用概率密度理论建立了一套飞行时间质谱的峰形模拟的方法和程序，并通过模拟分析考察了不同的空间分布和速度分布对离子峰形的影响。
A peak shape simulation program of TOFMS based on probability was developed, and the effects of ionic initial spatial and velocity distributions on ionic peak shape were studied.
利用正弦扫频波激振钢桥，分析其损伤前后加速度反应功率谱密度的变化。
The bridge was actuated by sinusoid sweeping frequency wave, and then the power spectral density differences between the undamaged and damaged bridge were analyzed.
分析了随机信号对开关函数功率谱密度特性的影响，据此提出随机脉宽调制技术的实用化设计方法。
The influence of random signals on the power spectral density characteristic of switching function is studied and a practical design of randomized PWM is proposed.
就特定海域分析和计算了大气噪声的功率谱密度，同时计算了在保证较高测量精度条件下所需要的最低场强，继而给出了无线电导航系统所需辐射功率的计算方法。
Radiant power of atmospheric radio noise and electric field intensity is computed precisely for given maritime space, and then the computational way of radiant power is given.
通过分析皮托管动压信号的方式，提出了一种基于功率谱密度分布的调节阀扰动信号分析新方法。
A novel method was proposed based on the total pressure of pitot tube and power spectral density.
接着论文具体分析和推导了几种典型的超宽带信号的时域表达式及其功率谱密度，PPM-TH-UWB信号、PAM-TH-UWB信号和PAM-DS-UWB信号都是本文研究的对象。
The paper analyses and deduces the temporal expression and PSD of multiplicate typical UWB signal. PPM-TH-UWB and PAM-DS-UWB are the object in the research of paper.
该技术提供了极低的检出限、极宽的动态线性范围、谱线简单、干扰少、分析精密度高、分析速度快以及可提供同位素信息等分析特性。
This technology can provide a very low determination limit, a very wide range of dynamic linear, simple lines, less interference, high-precision and fast analysis and isotopic information, and so on.
第三部分对随机振动功率谱密度误差作简略的分析。
The third part analyzes briefly the statistical errors in the power spectral dens...
在此基础上进行了谱分析，得到了该模型的谱密度、互谱密度和双互谱密度。
The spectrum density matrix of the proposed model was constructed and its properties are investigated.
原子谱线和离子谱线特性分析表明，在鞘层附近区域感应耦合等离子体具有较高的离子密度和较低的电子温度。
It was shown that the ion density is higher and the electron temperature is lower in the vicinity of inductively coupled plasma sheath according to the ionic line and atomic line.
研究了纳米晶体铜材料的压制工艺条件对其相对密度和显微硬度的影响，并用正电子湮没寿命谱、扫描电镜和热重分析仪对其微观结构进行了表征。
The influence of relative density and microhardness on pressing parameter of nanocrystalline Cu was studied, and its microstructure was characterized by PAS, SEM and TG.
研究了纳米晶体铜材料的压制工艺条件对其相对密度和显微硬度的影响，并用正电子湮没寿命谱、扫描电镜和热重分析仪对其微观结构进行了表征。
The influence of relative density and microhardness on pressing parameter of nanocrystalline Cu was studied, and its microstructure was characterized by PAS, SEM and TG.
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