波谱

F. Their structures were identified as betulone (1), 3,4,5-trimethoxyphenol-β-D-glucopyranoside (2),α-amyrin (3),β-amyrin (4),β-sitosterol (5), and stigmasterol (6) by spectroscopic evidence (IR, NMR, MS, etc.) and comparision of their spectral data with those of the literatures.

F。 的乙醇提取物中分离得到6个化合物，经波谱分析及与文献数据对照确定其结构分别为：betulone (1)、3，4，5-三甲氧基苯酚-β-D-吡喃葡萄糖苷(2)、α-香树脂醇(3)、β-香树脂醇(4)、β-谷甾醇(5)和豆甾醇(6)。

The suitable detection wavelength was selected through qualitative determination of wave spectrum. With 95% ethanol as the reference solution, the standard curve was drawed with a series of different concn. of standard solution of chlorogenic acid, and the Absorbance of extracting solution was determined and the chlorogenic acid content in filtrate was calculated.

波谱定性检验选择适宜的测定波长，以95%乙醇为参比溶液，用配制好的一系列不同浓度的绿原酸标准溶液绘制标准曲线，测定提取液的吸光度，计算滤液中绿原酸的含量。

Several slow-wave spectra, which are measured in different experimental conditions, are shown and analyzed.

在实验上得到一些条件下的慢波的波谱，并进行了分析。

The influences of the magnetic field and the polarization of microwave field to the spectra are also discussed.

还讨论了磁场和慢波场的偏振对波谱的影响。

This article analyzes the influence of band spectral response function and band width to land surface temperature inversion.

分析了波谱响应函数和波宽对红外数据反演地表温度的影响。

Methods Compounds were separated and purified by silica gel column chromatography and their structures were identified on the basis of spectral data and physico-chemical property.

方法采用硅胶柱层析进行分离纯化化合物，根据理化性质和现代波谱技术进行结构鉴定。

Expanding a monochromatic electromagnetic beam into the sum over a seriesof plane waves using the spectral representation technique derives the generalforms of the scattering formulae of a monochromatic electromagnetic beamincident on wire grids. The general forms of the scattering power formulae of amonochromatic electromagnetic beam by wire grids are presented by usingPoynting theorem.

应用平面波谱技术将单色电磁波展开成连续平面波序列，由平面波入射金属栅网的散射公式推导了单色电磁波通过金属栅网的散射场一般公式，并应用坡印亭定理推导其散射功率的一般表达形式。

This article reviewed the structures,spectral properties and chemical synthesis of actinidine analogues.

归纳总结了猕猴桃碱类的结构特性，波谱特征以及化学合成等方面的研究。

Synthesis, spectral and structural studies of isomerized products of isopreneiron complexes and crystal structure of tetracarbonyl ethoxypentachloroph

异戊二烯二羰基铁配合物的异构化产物的合成，波谱和结构研究及四羰基铁的晶体结构

Then some predominant characteristics are selected which are suit for the evaluation of heavy metal pollution with the synthesis analysis of spectral characteristics and the correlation between them and the contents of heavy metals.

对波谱特征及其与重金属含量的相关关系综合分析，选择出一些可以作为评价重金属污染程度的显著特征。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。