查询词典 characteristic spectrum

Aiming at the signal processing problems that exist in online fault diagnosis for train running gear, based on discussing the principle of characteristic spectrum analysis, a method of full period and uniform angle sampling is applied, which transfers the vibration signal from time domain into angular domain. The angular domain signal is transferred into corresponding characteristic spectrum using FFT. Through spectrum estimation and analysis, fault characteristic spectrum values of running gear components are acquired to distinguish their faults.

在讨论特征分析方法原理的基础上，针对机车走行部故障在线监测过程中存在的信号分析与处理问题，运用整周期等角度采样方法将时域振动信号转换为角域信号，采用FFT变换将角域信号变换为对应的特征频谱，通过谱估计、谱图分析得到机车走行部各零部件的故障特征谱值，再根据该特征谱值识别机车走行部各零部件的故障。

By comparing the results with the SPAS-G calculation, the average relative deviation is 2.24%, and this indicates that both the net construction and the characteristic spectrum simulation are successful.

结果显示，两者的平均相对偏差绝对值为2.24%，表明网络的构造及特征能谱的模拟是成功的。

Results Both of absorptions had the characteristic spectrum.

荧光方法的优点是对癌症诊断的灵敏度高[1 2 ] 。

The characteristic spectrum could be used to detect the double-bond DNA with one base mispairing.

该特征可被用于检测1个错配碱基的双链DNA。

Diesel engine ; fuel ; system ; fault diagnosis ; characteristic spectrum

柴油机；燃料；系统；故障诊断；特征；细化谱

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla...

根据Fisher判别分析结果，选用三维荧光光谱的第一主成分得分谱作为硅藻和甲藻的识别特征谱，建立了浮游植物荧光特征谱库。

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla.

将浮游植物三维荧光光谱与主成分分析方法相结合，针对我国东海常见的12种藻建立了硅藻和甲藻的识别测定技术。

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla.

将浮游植物三维荧光光谱。主成分分析方法相结合，针对我国东海常见的12种藻建立了硅藻和甲藻的识别测定技术。

As a result,the flame spectrum of the whole wave-band and the image corresponding to every flame spectrum data were obtained in the experiments.

标 签 光学光谱同步控制全光谱火焰图像燃烧特性 spectrum synchronization control full-spectrum flame image combustion characteristic

Because the variation of the light source and other errors related to light intensity are not so critical for the measurement in this system and some 1/4λ wave-plates affect on the other wavelengths is very little, the retardance can be measured in high accuracy and high repeatability. In principles, the system accuracy can measure any retardance, and can be used in characteristic spectrum analysis of other phase retarders.

由于此系统可忽略光强的波动及与光强有关的误差，且1/4λ波片对多波长测试误差的影响很小，故其有很高的精度和可靠性，可以测试其精度范围内的任意小延迟量，亦可对其他光学相位延迟器件进行光谱分析。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。