试验中，提取驱动桥振动信号频谱的二维谱熵作为特征指标，输入到SVDD分类器。
In the test on driving axle, the 2d spectrum entropy of vibration signals is extracted as the feature indicator and is input into the SVDD classifier.
分别计算了井外有两层、三层介质时井内声波传播的二维谱，绘制了时差随频率的变化曲线。
After the simulation of the well surrounded by two and three stratums, the two-dimensional spectrum is calculated while the curve of wave slowness changes with the frequency is drawn.
当模型井的径向厚度较大时，二维谱中纵波速度线附近的模式波类型较多，空间分布较密集，幅度也较大；
There are a lot of mode wave patterns near P-wave velocity line in 2-D spectrum, which have dense special distribution and large amplitude when the radial thickness of model well is thicker ;
在风向逐渐或骤然改变情形下，计算的时间响应尺度与海上观测符合，而且演化中的二维谱结构得到良好刻画。
In the case of gradual and abrupt shift of wind direction, computed response time scales agree with field measurements and the evolving two dimensional spectral structures are well depicted.
综述了近年来核磁共振波谱技术在高分子材料方面的应用，主要从液体核磁共振—固体核磁共振—核磁共振二维谱等技术方面进行了论述。
In this paper, we summarize the application of NMR at high molecular materials in recent years, from liquid NMR-solid NMR two dimension NMR correlation spectrum.
进一步将二维谱熵作为支持向量机（SVM）分类器的输入量，结果表明SVM具有良好的分类能力和计算效率，可以满足在线监测的要求。
Then, inputting the two-dimension spectrum entropy into the SVM classification, the result shows that SVM has fine compute efficiency and classified ability.
该方法首先计算检测距离和单元以及左右相邻距离和单元的空时二维谱，将空时二维谱转换成二值图像，再在图像域用相邻距离和单元海杂波对消检测单元海杂波。
The spatial-temporal spectrum is fast calculated, and then transformed to an image, finally the sea clutter at one range-sum bin is eliminated using the images at the adjacent range-sum bins.
结果：用三维褶合光谱差谱和二维相关系数图谱显示鉴别结果，令人满意。
Results:The results were demonstrated by three-dimensional differential diagram of convolution spectra and match comparison diagram of correlation coefficients.
本文观察了12例脑动静脉畸形病人的二维经颅彩色多谱勒血流显像。
A 2-dimensional transcranial CDFI and cerebral angiography were compared with in 12 patients of cerebral AVMs.
双谱是一种平移不变的特征，含有丰富的相位信息，但它是二维函数，不利于模板匹配。
Bispecra is a translation-invariant character, contain abundant phase information, but it is two dimension, and misfit board match.
方法14名受试者分别参加肱二头肌和腰部脊竖肌等长运动负荷实验，取表面肌电信号进行FF T功率谱及其功率谱二维地形图分析。
Methods Static isometric loading of the biceps and low back muscle was performed in 14 subjects, using FFT power spectrum and its two dimensional mapping to analyze SEMG signals from these muscles.
时频分析方法分为线性、二次型和自适应等多种方法，它们提供了在时频二维平面上，分析信号时变功率谱的有效手段。
The methods of time frequency analysis include linear, quadratic and adaptive methods. They provide effective tools for analyzing signal time varying spectrum in time frequency plane.
工程表面的二维功率谱包含了丰富的有关表面特征的重要信息。
Two-dimensioning power spectrums of engineering surfaces contain plenty of information that is important to surface characterization.
二维；彩色多谱勒超声；下肢深静脉；血栓；诊断。
Two-dimensional; Color Dopper ultrasound; Lower limbs deep vein; Diagnosis.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
研究了二维椭圆台球中的量子谱和经典轨道之间的对应关系。
The correspondence between the quantum spectra and the classical orbits of the two-dimensional elliptic billiards is investigated.
介绍了所用的二维光子计数斑点像探测系统的性能，分析了探测系统的光子噪声、附加噪声和其它更复杂的噪声对斑点图的平均功率谱和重谱的影响。
Then the influence on the average power spectrum and bispectrum of specklegrams caused by the photon noise, additive noise and more complex noises of other kinds in the detecting system .
结果：不同产地何首乌的二维相关红外光谱谱图特征明显不同。
Results: Two-dimension spectrum of Radix Polygoni Multiflori from different sources have their obvious ir characters.
本文对传动系多工况二维随机载荷谱的统计方法进行了分析与研究。
The analysis and research on the statistical method for two-dimensional random load spectrum of vehicle transmission are presented in this paper.
并阐述了利用MAT - LAB软件绘制二维全息谱图和三维全息谱图的方法。
Method of two and Three dimensional holo spectrum plotted by MATLAB software is set forth.
染料分子的化学结构通过1H核磁共振谱，二维1 H - 1h相关谱以及质谱分析得以确定。
The chemical structure of dye molecule was confirmed by 1h nuclear magnetic resonance spectroscopy, 1h-1h COSY and mass spectrometry.
目的：探讨二维及彩色多谱勒超声(2dCDFI)在下肢深静脉血栓(DVT)诊断中的应用。
Objective: To explore the applications of two dimensional color Doppler imaging (2d CDFI) in diagnosing deep venous thrombosis (DVT) in lower limbs.
分别利用一维和二维载荷谱对EQ1030T型轻型车后桥进行了疲劳寿命预测。
The one-dimension and two-dimension load spectra are used to predict the fatigue life of the rear axle in EQ1030T light truck.
使用食管超声心动图在电除颤前后记录二维、M型和多谱勒超声图像。
Transesophageal echocardiography with two dimensional image, M-mode and pulse Doppler were performed at baseline and after several episodes of de.
使用二维矩形破裂模式，导出了大小不同地震的震源位移谱的表达式。
The spectra of the far-field body wave displacement for various magnitude earthquakes are derived, using a two-dimensional faulting model featuring a rectangular fault.
另外，在一维红外谱图中无法分辨的不同取代位置的甲基，在二维相关谱图中，可以清楚地区分开来。
Additionally, absorption bands of the two methyl substituents at different positions of the thiophene are clearly distinguished.
二维动态nmr谱通常可由三脉冲实验得到。
In general, two dimensional dynamic NMR spectrum can be obtained by means of three-pulses experiment.
方法：采用傅立叶变换红外光谱法获得红外原谱，再结合二维相关技术，分析何首乌药材红外特征。
Methods: Compared the characters of FTIR spectrums, two-dimensional spectrums of Radix Polygoni Multiflori from different sources.
结论认为二维经颅彩色多谱勒血流显像在脑动静脉畸形的诊断、评价治疗效果等方面有重要作用。
Use of 2-dimensional transcranial CDFI is very important in the diagnosis and evaluation of the treatment effects on cerebral AVM.
结论认为二维经颅彩色多谱勒血流显像在脑动静脉畸形的诊断、评价治疗效果等方面有重要作用。
Use of 2-dimensional transcranial CDFI is very important in the diagnosis and evaluation of the treatment effects on cerebral AVM.
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