Meaning: The self-correlation function and power spectrum density Function of a power-typed signal compose a FT pair.
上式表明：功率型信号的自相关函数与其功率谱密度函数构成傅立叶变换对。
In order to analyze and evaluate the spectrum restoration property of image restoration algorithms, a new method based on Gaussian function is proposed.
为了对图像复原算法频谱恢复特性进行分析和评价，提出了一种基于高斯函数假设的分析新方法。
For the magnetic perturbation contribution, we obtain the frequency shift of modes with different degree as a function of the spectrum of fluctuating magnetic field.
如果只考虑磁扰动的贡献，不同值的振动模的频率变化仅只是涨落磁场能谱的函数。
The distribution of elements at the sulfidation reaction product section of a sodium salt-modified desulfurization agent was analyzed by using the energy-spectrum scanning function of SEM.
利用SEM的能谱扫描功能，对钠盐调质脱硫剂硫化反应产物断面元素分布进行了分析。
Taking rigid disk surface as an example, fractal parameters are obtained by means of power spectrum and structure function, providing a proper geometric model for further contact analysis.
实验结果表明，分形维数能很好地表征表面轮廓，可为进一步的接触分析提供更合理的几何模型。
Objective To evaluate the clinical value of tissue Doppler imaging(TDI) and pulmonary venous flow spectrum in the assessment of left ventricular diastolic function by E/A ratio.
目的通过组织速度图舒张时间、肺静脉频谱及二尖瓣环E/A比值评价冠心病患者左室舒张功能。
In case the spectrum of incident beam is a function of triangular form, we calculated the spectral distribution of transmission through the F-P etalon with a computer.
当入射光束频谱为三角形函数时，我们用计算机计算了透过F - P标准具以后的频谱分布。
A new method of the original signal reconstruction from phase function of the spectrum is presented in this paper.
本文给出了由频谱的相位函数重建原始信号的新方法。
Using the wavenumber frequency transfer function to describe the whole system consisting of the plate and the liquid loading, a general expression of the cross spectrum was derived.
用波数-频率谱传递函数表征包括弹性板和流体负荷在内的整个系统的特性，导出了噪声场互谱函数的一般表示式。
It is a disinfect and antiseptic medicine, strong function of broad-spectrum bacteriostasis, sterilization, used for disinfecting hands, medical apparatus and instruments, wound, skin and so on.
消毒防腐药，具有相当强的广谱抑菌、杀菌作用，对革兰氏阳性菌及革兰氏阴性菌均有效。用于手、器械、创面及皮肤消毒等。
Result of the experiment proves that the processor implements the function of spectrum analysis at a high speed and satisfies the request of commonly real-time signal processing.
实验结果表明此处理器高速地实现了频谱分析功能，满足实时信号处理要求。
A method of retarded Green function equation of motion is applied to inveti gate the surface spin wave spectrum of Heisenberg ferromagnet.
用格林函数运动方程方法研究了海森堡铁磁体表面自旋波谱。
A new quantum spectrum function is defined using the eigenvalues and eigenfunctions of the system considered.
用体系的本征值和本征波函数定义一种新的量子谱函数。
A least Pth optimization method is developed for estimation of structural dynamic parameters from estimated response spectrum power density function.
本文提出用最小p乘优化方法从响应功率谱估算结构的动力参数。
Normally the spectrum is given as a function of transmittance, the quotient of the intensity of the transmitted radiation and the incident radiation.
在测量范围内可以产生单色辐射光学系统的分光光度计也可以使用。通常光谱是透光度（透射光强度与入射光强度之商）的函数。
The analysis indicates that the inverse spectrum has a noticeable feature to distinguish the influence of the side frequency and identify the transfer function of the testing system.
分析表明倒频谱在识别边频及测试系统传递函数的影响方面具有显著的特点。
The analysis indicates that the inverse spectrum has a noticeable feature to distinguish the influence of the side frequency as well as the transfer function in measuring test system.
分析表明倒频谱在识别边频及测试系统传递函数的影响方面具有显著的特点。
Conclusion: it is suggested that the analysis of power spectrum of HRV be a sensitive noninvasive method to evaluate the function of cardiac autonomic nerve.
结论：HRV频谱分析对评价心脏植物神经功能是一种敏感而无创的检测指标。
The paper introduces a kind of digital spread spectrum receiver based on FPGA , describes function models, programmable method and time relation.
介绍了一种基于FPGA设计的数字化扩频接收机，阐述了接收机各功能模块功能、编程方式及时序关系。
Spectrum sensing technology is a key component of cognitive radio whose function is to find out the empty frequency bands quickly and reliably.
频谱检测是感知无线电的关键技术之一，要求感知用户可靠、快速地检测频谱空洞。
The new setup is upgraded to function for a relatively broad spectrum of light, whereas previous models had very narrow operational regimes.
新的设计可以使隐身衣在相对更宽的光谱范围内使用，但是以前的隐身衣的可操作性光谱范围非常狭窄。
The new setup is upgraded to function for a relatively broad spectrum of light, whereas previous models had very narrow operational regimes.
新的设计可以使隐身衣在相对更宽的光谱范围内使用，但是以前的隐身衣的可操作性光谱范围非常狭窄。
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