According to vibration characteristic spectrum, a gas turbogenerator fault diagnosis approach based on rough set theory is proposed.
本文以振动特征频谱为依据，提出了一种基于粗糙集理论的燃气轮发电机组故障诊断新方法。
When a laser is shone on the aptamer, the molecule absorbs light and reemits it with a characteristic spectrum, called its "Raman signal."
适配子可以吸收激光并放射出称为“拉曼信号”的特征光谱。
Provide some significant experimental results for determining some properties of igniting fire sources in wildland fire from their infrared radiation characteristic spectrum.
试图通过试验，研究从林火点火源的红外辐射谱特性确定火焰性质的方法。
The characteristic spectrum produced by the interaction between the electromagnetic wave and surface rock is the theory basis of the mineralizing alteration information extraction by remote sensing.
电磁波与地表岩石、地质体发生作用，产生其特征光谱为遥感提取矿化蚀变信息提供了物理基础。
Results Utilizing lactic acid dissolution and alcohol precipitation technology could prepare granules of chitosan lactate, which had characteristic absorption peak in infrared spectrum.
结果利用乳酸溶解和醇沉淀工艺可制备出壳聚糖乳酸盐颗粒，在红外光谱中具有特征性吸收峰。
This algorithm has utilized the signal to carry on the signal characteristic that Fourier includes in the density of the power spectrum after Fourier transform.
算法利用了信号进行傅里叶变换后功率谱密度中所包含的信号特征在基带完成，并用软件实现。
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。
Under the room temperature and Nitrogen environment (eliminate the influence of water vapor absorption), we get the characteristic absorption spectrum of GaAs within the band of frequency.
在室温去除水份影响的氮气环境中，获得了低温生长的砷化镓在该波段的特征吸收谱。
Multifractal method is further used in the analysis of surface. It is found that multifractal spectrum can reflect the overall characteristic of the distribution of probability of a surface.
进一步将多重分形的方法应用到对这些表面的分析中，发现多重分形谱可以全面反映表面概率的分布特征。
And then, the category of laser ceramic, laser active ion, laser spectrum characteristic and the method of making laser ceramic are introduced respectively.
接着分别介绍了激光陶瓷的种类、激光离子、光谱与激光特性和激光陶瓷的制备方法。
The spectrum signal was pretreated and several key characteristic parameters were extracted and then a set of new feature vector was obtained by reducing the dimensions.
首先对光谱信号进行预处理并抽取了多个关键性的特征参数，通过降维分析得到一组新的特征向量。
By analyzing the spectrum characteristic of snow, a method of extracting snow information was suggested based on index of NDSI and NDVI.
通过对雪的光谱特征分析，提出利用归一化积雪被指数NDSI结合归一化植被指数进行积雪信息提取的方法。
The ratio of vertical and horizontal predominant period is 0.7-0.9, so independent characteristic period of vertical design response spectrum should be defined.
竖向与水平向地震动分量卓越周期的比值在0.7 - 0.9之间，竖向设计反应谱的特征周期应有单独规定。
The wide angle spectrum characteristic of polarization interference filter (PIF) is key to the design and manufacture.
偏振干涉滤光片宽角度光谱特性是设计研制中的关键。
According to the correlation of TV image, the structure and characteristic of three dimensional spectrum in PAL TV signals is mathematically analyzed.
根据电视图像的相关特性，对PAL信号的三维谱结构及其特征进行了数学分析。
The construction, spectrum and characteristic of this code are analysed and computed.
文章描述了码的构成，计算了码的频谱结构，分析了码的特点。
Method: to make use of the methods of HPLC and NMR, and to establish the characteristic absorption spectrum.
方法：采用光谱学及色谱学方法，确定醇提取活性成分的HPLC和NMR的特征吸收图谱。
This paper simply describes characteristic of MATLAB language, then especially introduces the emulation of oscilloscope and spectrum analyzer applying MATLAB language.
本文简单叙述了MATLAB语言的特点，并介绍了如何用MATLAB语言编写程序，实现示波器和频谱仪的仿真。
OBJECTIVE to study the distribution of clinical infectious bacterium spectrum, to reveal infections characteristic and epidemiology, and to provide basis for clinical diagnosis and therapy.
目的研究临床感染细菌谱分布，揭示感染特征及流行病学规律，为临床诊疗提供依据。
And although there is a great mass of similarity in infrared spectrum, the results still show differences in the characteristic peaks of infrared spectrum between unzymic and zymic Pu'er tee.
根据红外光谱的特征峰形和吸光度比不仅可以区分生普和熟普，而且有可能区分生普或熟普的不同品质级别。
Based on sea clutter reflectivity mechanism, this paper analyses the amplitude distribution characteristic, correlation characteristic and spectrum characteristic of sea clutter in depth.
基于海杂波散射机理，深入分析了高分辨雷达的海杂波幅度分布特性、相关特性和谱特性。
But these researches all established on the stage of elasticity analysis, the same characteristic period of response spectrum was used for the stage of elastoplastic analysis.
但这些研究多建立在弹性阶段分析的基础之上，对于弹塑性阶段的选波采用了与弹性阶段相同的特征周期。
The critical function and critical rules based on the spectrum characteristic selection and the process of spatial dimensional reduction were established.
通过光谱特征选择及空间降维处理，建立了判别函数，确定了判别规则。
The transmission spectrum and the absorption spectrum of alcohol shows that the characteristic absorption peak shifts with alcoholicity due to the molecular configuration.
通过对酒精透射光谱和吸收光谱的研究发现，其特征吸收峰随浓度不同发生漂移，从分子结构能级角度对其做了定性解释；
Based on analyzing characteristic of spectrum, the optimum combination of bands has been established for TM image classifying to research on land-use variation in Guiyang city.
基于图像光谱信息特征分析，确定了用于贵阳市土地利用变化遥感图像分类的最佳波段组合。
By introducing the yielding level factor and constructing the ductility demand spectrum, the characteristic of peak values and frequency contents of ground motions are considered separately.
引入结构屈服水平系数，建立了结构的延性需求谱，使地震动的幅值特性和频谱特性可以分开考虑。
The characteristic of the correlation between frequency spectrum and nugget size is studied, and the relationship is founded.
从电流信号的频谱图中寻找与熔核直径相关的特征，建立起电流频谱与熔核直径的关系曲线。
A method for time domain fast diagnosis of a signal of the characteristic changes, of the power spectrum is proposed.
本文提出了在时域中快速诊断信号功率谱特征变化的方法。
A method for time domain fast diagnosis of a signal of the characteristic changes, of the power spectrum is proposed.
本文提出了在时域中快速诊断信号功率谱特征变化的方法。
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