最后给出了主轴碳精密封监测诊断实例和实测数据频谱特征分析。
Finally, it presented an example of main shaft carbon sealing monitoring and diagnosis and the spectrum feature analysis based on the data measured.
往复泵泵阀振动信号的常规频谱分析，由于故障特征信息往往被淹没于强大的噪声以及相邻部件的干扰而使诊断精度大打折扣。
The accuracy of traditional spectrum analysis for the diagnosis of reciprocating pump valve is not satisfied for the interference of the noise and the vibration of the adjacent parts.
通过分析冷却塔风机故障的频谱特征，诊断了风机运行异常振动原因并加以解决，确保了风机的正常运行。
The cause of fan abnormal vibration is diagnosed by analyzing the spectrum characteristic of fan trouble for cooling tower. The normal running of fan is guaranteed.
通过对播种机的田间振动频谱分析，得到了它的的振动特征。
Through vibration frequency spectrum analysis of no-tillage seeder in field, its vibration characteristics were obtained.
频谱分析确定了破裂点脉动和螺旋波的频率特征。
Spectrum analysis reveals the frequency characteristics of vortex breakdown point oscillation and spiral wave.
通过对调制信号作谱分析，以其频谱中是否存在某种故障的特征频率分量来诊断有无该种故障。
The fault is diagnosed by extracting the fault feature component from the frequency spectrum of the modulated signal.
根据振动信号频谱分析结果，提取频谱特征，获取各种故障征兆信息。
According to the result of spectrum analysis of vibration signals, frequency characteristics are acquired and various fault signs are gained.
本文采用自回归模型得到肝脏组织不同区域的超声结构散射频谱，并对其频谱特征进行了统计分析。
In this paper, the ultrasonic spectra of liver's structural scattering were obtained by using autoregressive model, and the spectral characteristics were analyzed statistically.
频谱法和周长-面积法都适用于分析幼树斑块形状的分形特征。
Both frequency-power spectrum method and perimeter-area method are suitable for the analysis of fractal characteristics of sapling patch shape.
第四章介绍了在自行构建的超声频谱分析系统上，进行超声频域特征应用方法与技术的研究。
Chapter 4 introduces the research of application and techniques of ultrasonic spectrum features on the analytic system which has been constructed.
对15只正常豚鼠的ABR时域波形和频谱特征以及对18只豚鼠通过脑干核团立体定位技术，毁损听觉通路各不同部位后的时域波形及频谱改变进行了分析。
An analysis was made of ABR frequency spectrum spectrum of 15 normal guinea pigs and 18 guinea pigs with the destruction of different plane of auditory pathway.
针对沉降数据序列的特征，研究了多项式回归方法、小波降噪方法、频谱分析法在沉降数据处理中的应用。
Probing to characters of subsidence series, we study on application of polynomial regression, wavelet denoising and frequency analysis on subsidence series processing.
针对定子电流特征频率所携带的故障信息，目前主要有两类处理方法：小波分解和频谱分析。
According to frequency characteristics of the stator current, which carries the fault information, there are two methods: Wavelet decomposition and spectral analysis.
分析了存在距离-速度同步拖引干扰时的信号频谱特征，研究了一种脉冲多普勒（PD）雷达抗距离-速度同步拖引干扰的方法。
The spectrum characteristics of synchronous jamming on range and velocity are analyzed. A method for a PD radar to counter the jamming is also discussed.
地震动是由于地震引起的地面运动，其时间历程函数表现为具有突变特征的非平稳随机过程，因此更适于利用小波变换进行频谱分析。
The ground motion time function is a kind of time serial signals, which is a highly varying and nonstationary randow procedure and fit for wavelet analysis.
本文对火山区不同种类的地震波形运用小波分析和频谱分析的方法，希望能提取不同类型火山地震的一些频谱特征，确定火山地震的类型。
Here we used Wavelet and spectral analysis to different kind seismic waves in volcanic area, in order to pick up their spectral character and determine the type of these earthquakes.
对机组突发性振动的成因进行了频谱分析，确认油膜振荡的振动特征并加以消除。
Through frequency spectrum analysis, the causes of sudden vibration of the unit are found out, and confirm that has the feature of oil film vibration, and then is eliminated.
传统语音信号谱特征的提取是基于FFT 的能谱分析方法，在噪音环境情况下，对噪音的频谱成分与语音信号的频谱成分的处理采用“平均主义”的原则。
Traditional speech signal processing is based on FFT power spectral analysis, in noisy condition, the spectrum of noise and speech signal are processed in the same way.
介绍了小波分析的基本概念和二进小波的分解及重构算法，探讨了测井信号的频谱特征。
The basic concept of the wavelet analysis, binary wavelet decomposition and reconstruction algorithm are introduced, and the peculiarities of the frequency of logging signal are discussed.
从时域特征参数和频谱分析两方面对泄漏信号进行了分析，研究了泄漏信号的基本特征。
Analyses of the leak signals both in the time domain feature parameters and the spectrum analysis is made to seek some basic characteristics of the leak signals.
在纹理特征提取方面，针对不同纹理特点分别采用了基于共生矩阵的统计纹理分析和基于小波变换的频谱纹理分析两种方法予以实现。
Similarly, the work of texture feature extraction is obtained by using co-occurrence matrix or frequency analysis based on wavelet transform depending on different characteristics of images.
观察分析其二维声像图、彩色能量图及脉冲多普勒频谱特征。
The characteristics of the 2 dimensional echogram, the color Doppler energy imaging and pulsed 2 wave Doppler ultrasound spectrum were studied.
文章在分析数字音频水印同步性的基础上提出了一种结合音频倒频谱系数和以音频能量特征决定数字水印嵌入位置的数字水印方法。
This paper gives a new method for digital audio watermarking which uses audio cepstrum domain and energy features to decide the location of embed frames.
本文对边缘信息的DCT频谱特征做了分析。
The DCT frequency spectrum features of image edges are analyzed theoretically and illustrated by numerical examples.
本文对边缘信息的DCT频谱特征做了分析。
The DCT frequency spectrum features of image edges are analyzed theoretically and illustrated by numerical examples.
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