查询词典 spectrum analysis

The molecular structure of product was characterized and confirmed by infra-red spectrum and mass spectrum.

用红外光谱和质谱对产物结构进行了表征。

Gas phase chromatography, mass spectrum and infrared spectrum are used to characterize the novel silanes structures.

应用气相色谱质谱和红外光谱表征了它们的分子结构。

The spectrum of the cavity field has a lot of information about the interaction between atoms and radiation. In this thesis, we investigate the spectrum of many-atom mazer.

因为腔场的光谱带有原子与腔场相互作用的重要信息，本文的工作集中研究多原子微激射器腔场的光谱性质。

The film was characterized by scanning electron microcopy, UV-Vis absorption spectrum and FTIR. Spectrum analyses indicated that some kind of interaction did take place between PANI and In_2O_3 nanoparticles.

光谱分析表明，PANI和In_2O_3在形成纳米复合材料时二者之间存在一定的相互作用；形貌分析发现，PANI/In_2O_3纳米复合材料呈典型的核-壳结构，薄膜表面呈网状多孔结构。

By adopting atmospheric condition of the midlatitude summer model in the daytime, no clouds urban aerosols, spring-summer aerosol profiles and background stratospheric profiles extinct model, the typical spectrum characters of target background radiance, contrast and transmittance are computed by the radiative transfer computation software MODTRAN, and then the spectrum characters in the wavelength bands are analyzed.

选择中纬度夏季白天、无云城市气溶胶模式、春夏季气溶胶廓线以及背景平流层廓线和消光的大气条件，利用辐射传输计算软件MODTRAN计算了目标背景亮度、对比度以及透过率的典型光谱特征，并进行光谱特征分析，然后在其他大气模式下对所选波段进行了验证，从而选择出目标探测的最优波段。

Also process of trigger in L3+C is introduced and trigger efficiency for muon spectrum measurement is given, which is very important to the precision measurement of muon spectrum.

本论文还详细介绍了L3+Cosmics实验的触发过程，并研究和测量了触发系统的效率，这对于μ谱的绝对测量是很重要的。

And the spectrum was divided into three regions, which were 430~100 nm, 1 000~1 800 nm, 430~1 800 nm, respectively. Four methods of spectrum data preprocessing were used, which were multiplicative scattering correction, standard normal variate, first derivative and second derivative.

应用多元散射校正，标准正态变量变换，一阶微分和二阶微分四种不同预处理方法，分别在430~1 000 nm、1 000~1 800 nm和430~1 800 nm三个光谱范围内建立识别脐橙污染程度的偏最小二乘法数学模型。

Methods to rotor of centrifugal compressor"s condition monitoring and fault diagnosis are summed up. Peak-to-peak value is an essential reference value of centrifugal compressor"s condition monitoring, which is easy to implementation in practice. On the other hand, according to fault diagnosis, power spectrum and axis obit also works. The direction of eddyis gained from full spectrum, which is vital in fault diagnosis. In a word, to make sure make an exact conclusion, different method should be put in used.

总结了离心式压缩机转子振动的监测和诊断的方法：在压缩机的状态监测的方面，峰—峰值是其主要的手段，实践证明其实现过程非常简单而且非常有效；而对于故障诊断，常用的功率谱分析和轴心轨迹都有一定的作用，全谱可以判断转子的进动方向，所以在分析过程中可以综合以上多种方法，能更加明确故障原因。

According to the signal-to-noise ratio of the spectrum resulting from the FSD procedure,it is proved that pixels on the large optical path difference are important for the shape of spectrum.

该算法根据退卷积技术对复原光谱信噪比的影响，推导出时域中随着光程差的增大，干涉图像压缩失真对频域中光谱曲线的信噪比影响越大。

To solve the contrary of spread spectrum gain and high data rate, a new M-ary orthogonal spread spectrum system is proposed in this paper.

本文首先简要介绍了红外热像仪和图像压缩技术，并对本系统采用的多进制正交扩频技术进行了理论上的分析和研究。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。