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The result of infrared spectrum contrast analysis with standard quartz, agate and opal shows that the main mineral composition of Chaoyang petrified wood is quartz, a natural petrified organic jewel, which has a bright future in development and application.

通过与标准石英、玛瑙和蛋白石的红外光谱对比分析，研究结果表明朝阳硅化木的主要成份为石英，属天然石化型有机宝石，开发利用前景十分广阔。

Atomic spectrum of ''.'alkaline'.'' metal

碱化的变成碱的；弱碱性的

Methods:The resonance light scattering spectrum of cetyltrimethyl ammonium bromide in alkaline medium was enhanced significantly in the presence of CuS/S~(2-) solution.

共振光散射技术是近年发展起来的一种新的分析技术，它具有简便快速、灵敏度高的特点，已用于痕量Cu元素的分析[1]。

Comparison studies have been performed concerning of dynamic amplification factor β and power spectrum density function (approximately estimated from design spectra) between Eurocode 8 and primary seismic design codes of China.

用动力放大系数β对欧洲规范(Eurocode 8)和我国主要抗震设计规范的设计谱进行比较；并对由欧洲规范和我国主要抗震设计规范设计谱估计出的功率谱密度函数作了比较。

In all other intervals of frequencies $\geq \nu_H$, the spectral amplitude acquires an extra factor $\frac{\Omega_m}{\Omega_{\Lambda}}$, due to the current acceleration, otherwise the shape of spectrum is similar to that in the decelerating models.

由于宇宙的加速膨胀，在所有频率$\geq \nu_H$的频段，功率谱的形状类似于在加速膨胀模型的情况，但功率谱的幅值获得了一个额外的因子$\frac{\Omega_m}{\Omega_{\Lambda}}$。

Taking Qixia City as the research region, using supervised classification of the flowering apple digital photos to extract the target information of the ratio of apple flower/leaf and apple flower/tree, this paper carries out the correlation analysis of the ratio data with synchronization hyperspectral detection data, to determine the spectral features and sensitive spectrum wave band of the apple florescence.

以栖霞市为研究区，利用苹果花期数码照片监督分类，提取苹果花树比和花叶比指标信息，通过与同步高光谱探测数据的相关分析，研究苹果树花期光谱特性，确定其敏感的光谱波段。

Based on the characteristic of GMAW arc spectrum, the method of the direct pool vision detection was proposed.

针对熔化极富氩气体保护焊接电弧光谱特点，设计了直接视觉检测法用于熔池图像的检测，获得了清晰的熔池图像。

This prediction has obviously made the application of spectrum technique in arc welding study much more theoretical.

此预测使应用光谱技术进行熔滴过渡研究的出发点从实验水平上升为理论高度。

The research on TIG welding arc ultraviolet spectrum has been completed by using this system.

利用此系统对TIG焊电弧紫外光谱进行了研究，成功地获得了不同焊接规范下。。。韩国明吴钊柳刚李俊岳

In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics of fault arc ,and extracted the sound signature of early fault arc by using power spectrum analysis.

为了避免或减少故障电弧的危害，笔者建立了故障电弧探测试验系统，采用功率谱分析的方法对故障电弧的早期弧声特性进行了试验研究，提取出故障电弧的早期弧声特征信息。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。