查询词典 spectrum analysis

Can be synthesized triangular wave, square wave, and an analysis of their spectrum.

可以合成三角波，方波，并分析它们的频谱。有详细的说明。

Then brief the basic situation of the finite element analysis method and the spectrum tube design situation.

接着介绍了有限元分析方法的基本情况和光谱简的设计情况；论述了如何用有限元方法对系统进行静力分析，如何进行前处理和定义作业参数，如何用计算出的结果对设计进行评估：并对光谱筒系统中的导轨板、桥和下平台进行了有限元分析。

Taking the composed earthquake swatch as an instance, analysis of its spectrum character is carried out.

并以合成的地震样本为例，对其频谱特性进行了分析研究。

Through the interface software, the Pro/E model of the robot is transmitted into the software ADAMS. After that the tyre file and road spectrum are written, the robot ADAMS model is established, the robot trafficability and ride comfort are simulated, and the simulation analysis of the insert mechanism and the shear mechanism is carried out.

把草方格机器人的Pro／E模型通过接口软件导入功能强大的多体系统动力学分析软件ADAMS，编写了轮胎文件和地面文件，建立了草方格机器人的ADAMS模型，进行了机器人的平顺性、通过性以及剪切机构和插草机构的仿真分析。

The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的"同物异谱"现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被"红边"范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。

The article simulates German high-speed track spectrum by MATLAB with trigonometric series method.The arch is modeled by ANSYS and make mode analysis.

考虑轨道不平顺对于车桥振动的影响，本文采用采用德国高速轨道谱，借助MATLAB应用三角级数法数值模拟德国低干扰垂向不平顺样本。

Using of matrix assisted laser desorption/ionization time of flight mass spectrometry coupled with carboxypeptidase Y digestion for the analysis of C terminal peptide ladder by direct determination of the mixture of truncated peptide, the sequence of C terminus can be read out simplely from the mass differences between adjacent peptide peaks on the mass spectrum.

用羧肽酶Y水解蛋白质和多肽，结合飞行时间质谱测定酶解后缩短肽的质量，根据相邻两肽峰的质量差别读出蛋白质和多肽的C端序列，在pmol水平下测定了人促肾上腺皮质激素片段以及人血管紧张肽片段，其中人促肾上腺皮质激素片段测到了C端 15个氨基酸残基的顺序

The skarn type vesuvianite, occurred in Huilong region,Tongbai,Henan Province is considered to be an aggregate of skarn minerals,based upon the identification under the microscope and analysis by energy spectrum,spectrometry and electron microprobe.

钟华邦，矽卡岩型符山石玉──回龙玉石矿的发现及玉石特征产于河南桐柏回龙地区的矽卡岩型符山石玉，通过镜下鉴定，能谱、光谱、电探测试分析，认为回龙玉是由多种矽卡岩矿物集合体组成的岩石。

Fragility curves of viaduct structure were developed by capacity spectrum method and nonlinear dynamic analysis method respectively.

用能力谱方法和非线性动力分析方法分别建立了高架桥结构的脆弱性曲线。

A variety of techniques from molecular biology have been used in research laboratories to study the effects of DNA binding small molecules, such as the gel mobility shift assay,~1H NMR, electrochemistry analysis, DNA foot-printing assay, and fluorescence-based assays, UV-Vis spectrum and viscometry.

目前有很多方法应用于实验室研究DNA与其他物质的相互作用，比如：凝胶电泳分析，核磁共振，电化学分析、DNA足印分析，荧光分析，紫外可见光谱分析以及黏度分析等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。