查询词典 spectrum

The absorption spectrum of Pr3+and Pr3++Yb3+, the fluoresce wavelength of Pr3+ in ZBLAN glass have been measured.

测量了ZBLAN玻璃中Pr3+，Pr3++Yb3+的吸收光谱和Pr3+的荧光发射波长。

Fluorescence analysis is an important and effective spectrum analysis.

荧光光谱分析是一种重要且有效的光谱化学分析方法。

This system can be applied to detection of the pesticides residues on crops and fluorescence spectrum analysis.

它可用于对粮食作物中的农药残留的检测和荧光光谱分析。

Methods BSA incubated withglucose were subjected to PAGE and SDS-PAGE,fluorescence spectrum and fluorescence intensity were measured using fluorometer.

牛血清白蛋白与葡萄糖在体外共同孵育后，经聚丙烯酰胺凝胶电泳及荧光分光光度计测定荧光值和扫描荧光光谱。

Regular porosity in about 38 nanometer size was observed using atomic force microscopy. Excitation and Emission spectrum were obtained by using F-4500 fluorometer.

用F-4500型荧光分光光度计测量其三维荧光谱，与未经氧化的铝片作对比，发现前者的激发谱在280 nm~340 nm有一个较宽的谱带，并且在253.8 nm附近有一个肩峰，发射谱有一个以417.4 nm为峰值的较宽谱带，而后者却无任何明显的发射峰和激发峰。

Based on the study of spectrum, the components and technology requirement of time-resolved fluorometer were presented And a concrete method to actualize the system of pulsed Xenon lamp and the assemblage of filter setting was developed Sound clinical evaluation project was designed At last, clinical evaluation of the time-resolved fluorometer was conducted.

在光谱研究的基础上，讨论了时间分辨荧光免疫分析测试仪的各个组成部分及其技术要求，提出了脉冲氙灯和聚光滤光系统的具体实现方法，制定了合理的临床评价方案，并对制成的测试仪样机进行了临床应用性能实验。将我们研制的时间分辨荧光免疫分析仪与国外先进同类型仪器进行一系列对比测试实验后，经相关回归分析所得出的相关系数都在99.5％以上，显著性检验小于0.01。

According to the relation spectrum resolution is inverse proportional to focal distance given a certain incident wavelength and phase number,and the theoretic formula is consistent with reported experimental result.

光谱分辨率是评价衍射微透镜分光特性的主要指标，根据标量衍射理论，给出了多台阶位相型菲涅尔透镜的设计公式，并利用球面波的传输理论推导了微透镜主焦距与光谱分辨率之间的函数关系，得出在入射波长和位相台阶数一定的情况下，光谱分辨率与中心焦距之间呈反比；理论推导的结果与已发表的实验结果一致。

A series of reactions may occur when the nitrous acid and naphthalene inside the atmospheric aqueous phases is exposed to sunlight. This article devotes to investigating from a microscopic angle the reaction mechanism and kinetics of this system using laser flash photolysis technique with an excitation wavelength of 355nm. The main research results are listed as below:(1) The OH quantum yield FOH for the photolysis of HNO2 in the aqueous phase was determined to be 0.234 and the absorption spectrum of OH radical was recorded as well.

本文以激光闪光光解为主要研究手段，考察了大气液滴中的HNO2及HNO2+萘体系经355nm紫外光照射后发生的微观反应及其机理，结果表明：(1)液滴中的HNO2经355nm光照产生OH自由基的量子产额为FOH=0.234；以瞬态技术记录了水相中的OH自由基的吸收光谱。

Formant: it uses the estimation of the overall shape of the spectrum's amplitude envelope.

共振峰：使用了对频谱的振幅包络线的大体形状所作的估计。

The recognition of voiced phonemes in final is based on the first and second formant which are extract from FFT spectrum.

根据浊音的特点，研究了浊音的短帧FFT谱，提出利用谱图和浊音谱结构的知识提取第一、二共振峰等参数，并根据在FFT谱上提取的第一、二共振峰进行浊音串和韵母的识别的方案。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"