谱函数

Then analytic expression of continuous relaxation time spectrum is obtained by correlative calculation method.

松弛时间谱是粘弹性函数的核心，获得连续松弛时间谱一直是难点问题。

Using spherical harmonic function expansion and finite element method,Boltzmann transport equation is solved numerically,the convergence of the method is approved.

讨论了谱有限元方法在中子测井数值模拟中的应用，用球谐函数谱展开和有限元耦合方法求解Boltzmann中子输运方程，得到了这种耦合方法的收敛性。

The paper also introduce definition and characteristic of Power Spectrum.

文中介绍了功率谱的定义、功率谱分析方法的特点，并对其计算原理和在实现过程中使用的函数加以详细的叙述。

The influence of counts caused by non-photoelectric effect in measured continuous hard X-ray spectrum was corrected.

结合数值模拟得到的单能光子在HPGe探测器上能量响应函数，用改进的剥谱法对测量得到的连续硬X射线能谱进行解谱。

The proposed method first employs covariance matrix tapers to obtain the interference covariance function and its corresponding spatial spectrum in non-ideal scenarios.

该方法首先利用协方差矩阵加权得到非理想情况下的干扰协方差函数和对应的空间谱，然后根据周期延拓后的干扰空间谱估计干扰自由度。

Stationary process: spectral decomposition of covariance function, spectral decomposition of stationary process, linear time invariant system, ergodic theorem, sampling theorem.

平稳过程：协方差函数的谱分解，平稳过程的谱分解，线性时不变系统，遍历定理，采样定理。

A new definition of linear spectrum of multi-valued logical function s over finite field was proposed.

给出了新的一般有限域上多值逻辑函数的线性谱定义，并对两类谱的转换公式做了进一步简化。

Thesignals of neutron, temperature, flow and pressure are recorded by multichannelanalog magnetic recorder and are analysed by the dynamical signal analyser ofSD375 type, to obtain auto-power spectrum density, cross-power spectrumdensity, phase shift, coherence and transfer function.

文章叙述了改建的重水研究反应堆(HWRR-3)和高温高压回路的噪声分析。利用多路模拟磁带仪记录中子、温度、流量和压力的信号。这些信号利用SD 375型动态信号分析仪进行分析，求得自动功率谱密度、互功率谱密度、相位、相干和传递函数等。

Based on the model of stiffened plates with concentrated added mass, a study of the stochastic vibration was carried out, and system's mean value, mean square value, cross-correlation function, cross-spectral density function were calculated.

从带有附加集中质量加肋板的力学简化模型出发，推导给出了该模型的随机功率谱密度，并分析了系统随机振动响应的其他统计数字特征：均值、均方值、互相关函数和协功率谱密度。

Phase screen which has same statistics as turbulence-induced atmospheric phase (vonKarman and Kolmogorov spectrum) will be generated by covariance method using pulse function as an orthonormal basis function.

提出正交基为冲激函数的协方差法，在Matlab中仿真实现符合大气湍流统计分布（vonKarman谱和Kolmogorov谱）的大气相位屏。

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。