查询词典 spectrum analysis

By means of measurements of mechanical and electrical properties, metallographical and transmission electron microscope observation, X-ray diffraction and selected diffraction analysis, scanning electron microscope and energy spectrum, the phase transformation process of Cu-15Ni-8Sn alloy and the relation between its microstructure and properties were studied.

本文利用力学与电学性能测试，金相与透射电镜观祭，X-射线衍射与选区电子衍射分析，扫描电镜和能谱分析等方法对Cu-15Ni-8Sn合金的相变过程以及合金的组织结构与性能之间的关系进行了研究。

1On the basis of pattern recognition analysis and in the light of the spectrum oflight source and the spectral response of CCD sensor as well as the spectral reflectance ofkernels,it is found that for the monochromic image recognition system and under the con-dition of reducing the probability error of classification to minimum,the optimum lightsource is a monochromatic light,the wave length of which is that rendering the series re-sponse of the difference between the spectral reflectances of two classes of kernels and theCCD sensor spetral response maximum.

在模式识别理论分析基础上，依据光源光谱、CCD摄像元件光谱响应以及作物籽粒表面反射率光谱特性，在使分类错误概率最小的目标下，得出籽粒黑白图象识别系统最佳光源为单色光，其波长为使两类待识别籽粒反射率光谱差值与CCD光谱响应二者的串联响应最大的波长。

This method makes it possible to apply the response spectrum to the seismic reliability analysis of structures subjected to mult.

这可以将反应谱方法推广应用到多点激励结构的抗震可靠度分析中。致突变性。设计规范运用

Study on application of multi-wavelength LED array induced fluorescence spectrum in multicomponent analysis.

多波长LED阵列诱导荧光光谱在多组分分析中的应用研究。

Fourth, it conducts the formula deduction, analysis and numerical calculations of the noncollinear quasi-phase matching gains and the output parametric spectrum, which leads to the conclusions that under the same circumstances, the gains of noncollinear interaction will be much less than those of the collinear interaction, and consequently the noncollinear interaction possesses the larger acceptance bandwidths than that of the collinear interaction.

对非共线准相位匹配的增益和输出参量光的允许波长进行了公式推导、分析和计算，得到了允许信号光波长的精确公式和关系曲线。

Using the NCEP/NCAR 1°×1° analysis data with a time resolution of 6 h, the Regional Spectrum Model reanalysis data from Japan Meteorological Agency with a horizontal resolution of 20km and a time interval of 6 h, we decompose the horizontal wind of super-intensity Typhoo SAOMEI (0608) based on the H-C method. The two parts are called the nondivergent and the irrotational components, respectively.

利用NCEP/NCAR 1°×1°的实时分析资料和日本气象厅区域谱模式20km分辨率的再分析资料，利用调和-余弦算法得到的无辐散风分量和无旋风分量，对2006年的8号超强台风&桑美&进行风场结构的比较分析。

Qualitative and quantitative analysis of chemical constituents.(1) Based on the GC spectrum of 2 species, Whitmania pigra and Poecilobdella manillensis shows little difference between them. 24 kinds of fatty acid in Whitmania pigra was firstly separated and determined by GC/MS. Among them, phenylacetic acid is a component which has active of anticancer. The existence of many unsaturated fatty acid provides chemical evidence for ShuiZhi's functions of invigorate the circulation of blood.

六首次对两种水蛭的脂肪酸类化合物进行了GC定性分析，发现其脂肪酸组成未见明显差异，后又对宽体金线蛭的脂肪酸类化合物进行了GC-MS分析，初步鉴定出24个化合物，包括苯乙酸、龙脑和22种脂肪酸，其中所含的苯乙酸具有抗肿瘤活性，大量不饱和脂肪酸的存在为水蛭在血液流变学方面的药理作用提供了一定的化学依据。

And the author summarized the main identifiable features at the genera level. Some pictures of new reported species have been drawn. In the thesis, the author studied its geographical elements, compared the species abundance, the generic similarity coefficient, the phytogeographical elrments,and analyzed the floristic spectrum using the method of Principal Component Analysis . According to the comparison between the area of Pangquangou Nature Reserve and other 8 areas, The abundance of the bryophytes of Pangquangou Nature Reserve lower than the other 8 area.

通过物种丰富度、属相似系数、区系谱主成分分析、区系地理成分分析等多种方法与内蒙古七老图山、山东崂山、福建鹫东麓、新疆东部天山和吉林省长白山、河南云台山、河北小五台山、滦河上游地区8个地区的苔藓植物区系进行了比较，发现庞泉沟自然保护区苔藓植物物种丰富度最低。

Seismic ; stack velocity spectrum ; characteristic analysis ; predictation ; oil and gas deposits

地震；叠加速度谱；特征分析；预测；油气储层

In bioconv ertion experiment for spiramycin of No.5 transformant, the bioconversion product was analysed with TLC, bioautography, HPLC and mass spectrum.Results showed that the bioconvert product is propionyspiramycin. Propionyl acylase gene was l ocolized on 0.53 kb insert DNA fragment of recombinant pasmid pLJM95. Analysis result of DNA sequence showed that content of G+C is 68.2% for 0.53kb insert DNA fragment .

以No.5转化子对螺旋霉素进行生物转实验，其转化产物经薄层层析，生物显迹，高压液相色谱及质谱分析表明，与标准丙酰螺旋霉素一致，这说明 No.5 转化子具有将螺旋霉素生物转化为丙酰螺旋霉素的能力，丙酰化酶基因位于重组质粒，pIJM95 0.53kb 插入DNA片段上。

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％。