Study on frequency spectrum characteristics of acoustic emission in coal or rock deformation and fracture;
煤体破裂声发射的频谱特征研究
Frequency Spectrum Characteristics of Loran-CPPM Coding Communication;
罗兰-CPPM编码通信的频谱特性研究
On the character of frequency spectrum for an underground engineering wall rock;
某地下工程围岩的声波频谱特性
In each OPs waveform, the frequency spectra from 10 to 290 Hz were derived by Fast Fourier Transform (FFT).
用快速傅里叶变换计算 OPs的 10～ 2 90 Hz频谱 ,计算频谱的功率总和以及最大功率。
A par-ticular method using frequency spectral analysis and fuzzy mode identification is introduced, And the deeply studied direction is indicated.
本文提出对电气设备噪声进行在线监测和实时故障诊断的概念和研究的必要性，综述了电气设备噪声分析和故障诊断的方法，结合实例介绍了利用噪声频谱分析和模式识别方法进行故障诊断的方案，并指出了深入研究的方向。
with impulse frequency spectra method may test bearings on-line and predict break-downs.
使用冲击脉冲频谱方法,可以在运行中准确完成轴承的检测工作,还可以预报设备故障。
Doppler Features of Central Retinal Artery and Vein: An Observation of Frequency Shift Spectrum in HealthyAdults;
正常成年人眼视网膜动静脉多普勒频谱形态观察
Based on microlocal analysis,the propagation of singularities of semilinear thermoelastic materials with microstretch was studied by using the diagnolization of frequency analysis,and the finite propagation speed of singularities of solutions to Cauchy problem of the model was proved.
基于微局部观点,利用频谱分析对角化的方法,讨论了一维半线性微伸缩热弹性力学材料的奇性传播问题,证明了该模型柯西问题解的奇性传播具有有限的传播速度。
Bio-impedance spectra measurement and systematic research on electrical impedance tomography;
生物组织复电阻抗频谱测量及电阻抗断层成像系统的研究
Resolution study of the second-order group dispersion effects on the spectra of super-Gaussian pulses;
二阶群色散对超高斯脉冲频谱影响的解析研究
Influence of Initial Chirp on the Evolution of Spectra;
初始啁啾对脉冲频谱演变的影响
spectral density
谱线[频谱，光谱]密度
swept IF type spectrum analyzer
扫中频式频谱分析仪
Spectral Sculpting of OFDM Signal for Opportunistic Spectrum Access
OFDM机会频谱接入的信号频谱成型方法
Research on Dynamic Spectrum Management Based on Multi-dimension Spectrum Space
多维频谱空间下的动态频谱管理研究
Frequency spectrum element, carrier frequency. Frequency type can be specified.
频谱元件，载波频率。可指定频率类型。
octave and third octave spectrogram
倍频程及1/3倍频程频谱图
The standard spectrum of whispered Chinese speech
GB/T7348-1987耳语标准频谱
zero-field paramagnetic resonance spectrometer
零场顺磁共振频谱仪
micro wave all-pictrue frequency spectrum analyzer
微波全景频谱分析仪
microwave pulse spectrum analyzer
微波脉冲频谱分析仪
three-dimensional dynamic spectrum analyser
三维动态频谱分析仪
solar radio dynamic spectrograph
太阳射电动态频谱仪
The standard spectrum of Chinese speech
GB/T7347-1987汉语标准频谱
swept front end type spectrum analyzer
扫前端式频谱分析仪
high resolution low frequency spectrum analyzer
高分辨率低频谱分析仪
real-time digital spectral analyzer
实时数字频谱分析仪
real-time digital spectrum analyzer
实时数字频谱分析器
real-time all-digital spectrum analyzer
实时全数字频谱分析仪