查询词典 diffraction spectrum

Finally, the calculation process of CGR graphic's multi-fractal analysis was studied. the scope of choice of the weight factor and the scale invariance range were discussed, the weight factor can be chosen as ? 15≤q≤50; multi-fractal spectrum and generalized dimension of different sequence were calculated, multi-fractal spectrum and generalized dimension in different scales of different sequences were compared, it was found that multi-fractal spectrum and generalized dimension can show different levels of fractal characteristics of CGR graphics of DNA sequence, which can distinguish more complex structure of sequences.

最后，研究了DNA序列CGR图形的多重分形的计算过程，讨论了权重因子及满足标度不变性的范围选择等问题，得到结论：对CGR图形进行多重分形时权重因子可以选择为-15≤q≤50；计算了不同序列的多重分形谱和广义维数，比较了不同序列不同尺度的多重分形谱和广义维数，发现多重分形谱和广义维数能够表现DNA序列CGR图形的不同层次的分形特征，能够区分更复杂的序列结构。

Infinite dimensional Hamiltonian operator;semigroups of linear operator;spectrum;residual spectrum;continuous spectrum

中文主题词：无穷维Hamilton算子；线性算子半群；谱；剩余谱；连续谱

This paperexplores the way to analyze the time domain amplitude spectrum , frequency domain power spectrum and inverse frequency spectrum todetect faults with AI technology, especially expert system.

本文探讨了利用智能技术特别是专家系统来进行旋转机械的时域幅值谱、频域功率谱及倒频谱分析，从而进行故障诊断的方法和途径。

The suspended sediment exponent model and quadratic inversion model solving spectrum reflectance, spectrum reflectance mean value and reflectance first-order derivative are established respectively, based on the analysis of spectrum characteristics. The results showed that the 900 nm wavelength exponent model can accurately quantitatively inverse the suspended sediment concentrations.

在对其光谱特性进行分析的基础上，分别建立了悬浮泥沙光谱反射率、光谱反射率均值和反射率一阶微分的指数反演模型和二次反演模型，结果显示 900 nm 波长的指数模型可以较准确地定量反演出悬浮泥沙浓度。

At different temperatures,the binding of naphthol green B to bovine serum albumin was studied by the fluorescence spectroscopy,three-dimensional fluorescence spectrum,synchronous fluorescence spectrum and ultra-violet spectrum.

在不同温度下，研究了萘酚绿B作用于牛血清白蛋白的荧光猝灭光谱、同步荧光光谱、三维荧光光谱和紫外-可见吸收光谱特征。

The spectrum analysis of periodic signals has some difference with the spectrum analysis of nonperiodic signals.The DFT result of nonperiodic signals indicates the spectrum density on frequency Ω,and is continuous.

一般信号的DFT结果表示该信号在频率Ω处的频谱密度，它是一个连续信号，周期信号的DFT仅表示它的基波及各次谐波的幅值，是一个离散信号。

Upon this we measure the conbination energy spectrum and momentum spectrum of valence orbital electron of C2H6. furthmore we get the isolation spectrum of valence orbital electron of N2 and C3H8 for the first time.

在此基础上，测量得到乙烷分子(C_2H_6)价轨道电子的结合能谱和动量谱，并用EMS方法测量得到氮分子(N_2)和丙烷分子(C_3H_8)价轨道电子的电离能谱。

The Ultraviolet-visible spectrum and FTIR spectra of wine processed by UHP was studied, the UV spectrum of wine was affected by different pressures and time, 300MPa was a point of UV spectrum inflection.

通过对超高压处理后的新鲜葡萄酒的紫外可见吸收光谱分析，结果表明：处理压力和处理时间对紫外可见吸收光谱均有一定的影响，300MPa是葡萄酒紫外可见吸收光谱曲线变化的处理拐点。

The frequency spectrum of the electric field, produced by an electric current dipole on the surface of the uniform conductive and polarizable earth, is transformed into time spectrum, with or without some random error added, and the time spectrum is then inversely transformed into the frequency domain.

基于层状导电和可极化大地表面，电偶源电场的时间谱在无随机干扰和有随机干扰时，进行频谱转换的计算结果，证明了时—频转换的误差传递问题严重。

Simulation results show that the method can detect the period of DS spread spectrum signal and produce the primitive polynomial of the spread spectrum code sequence under the conditions that the length of receiving signal is small than one spread spectrum period.

仿真结果表明该方法能够在接收信号长度小于一个扩频码周期的情况下检测出直接序列扩频信号的扩频码周期和产生扩频码序列的本原多项式。

Farmers and ranchers are providing land to turbine owners or, in some cases, owning the equipment themselves.

农民和大牧场主正在向涡轮机主人提供土地。或者在一些情况下，他们自己拥有设备。

"This is a wonderful place. I will come back and visit it often."

"这是一个精彩的地方，我一定要经常来参观。"