查询词典 spectrum

In the paper, the theory and methodology of amplitude correction method using average of several points in discrete spectrum, which is suitable for analyzing the dynamic signals of rotating machinery with small varying speed, is proposed and systematically studied.

系统而完整地提出了处理变速机械弱时变响应信号的离散频谱多点平均幅值修正法的理论和方法，严格证明了该方法能精确地计算出平稳信号和频率微弱波动信号的幅值，能近似地计算出幅值和频率均微弱波动的信号的平均幅值，并应用这套理论成功地解释了频率微弱波动信号的幅值谱表现出较严重的"功率泄露"效应的原

Measurement ; sinusoidal phase modulating interferometer ; spectrum leakage ; discrete Fourier transform ; measurement accuracy ; frequency changes

测量；正弦相位调制干涉仪；频谱泄漏；离散傅里叶变换；测量精度；频率变化

PIV experiments were performed to study Kelvin-Helmholtz discrete sub-vortices. Numerical simulation was performed to study this phenomena and spectrum of the discrete sub-vortices is discussed.

利用PIV实验对剪切层中由Kelvin-Helmholtz不稳定性引起的小涡运动状态进行了分析，对小涡脱落频率进行了统计；进而利用数值模拟的方法，也得到小涡脱落的频谱。

Based on Wavelet Packet Decomposition, Entropy Threshold Method has been put forward to reject the Discrete Spectrum Interference in on-line PD monitoring.

首次提出用于抑制局部放电在线监测中周期性窄带干扰的小波包变换熵阈值法。

According to that the eigenstates of applied quantum systems, are with discrete or continuous spectrum construction, quantum information is divided into two types of discrete variables and continuous variables. They have different features and application potentials. Both of them are parallelly developing.

量子信息科学根据所利用的量子变量的本征态具有分离谱或是连续谱结构区分为分离变量与连续变量两大类，连续变量和分离变量量子信息有着不同的特点与应用前景，各具特色，目前正在平行发展。

In this paper, we also obtain a sufficient condition for the discreteness of spectrum of 2n-th order J-self-adjoint differential operators.

最后，本文还给出了2n阶J-自伴微分算子的谱是离散的一个充分条件。

A discrete cosine transformalgorithm was used to process the joint power spectrum in order to enhance thecross-correlator term and eliminate the auto-correlator term in the joint power spectrumand improve the discriminability of the system.

通过对空间光调制器在傅氏谱平面的灰度动态范围进行调节，控制了通过整个系统的光能量，使得系统能够实时运行。

The indicated conclusion appears to be that we can never really know whether disembodiment is metaphysically possible, or whether necessary supervenience is the case, or whether spectrum inversion could occur.

这种indicated的结论看起来，我们永远不能真正知道'身心分离是否有形而上学的可能'，或者说'必要的随附是否就是事实'，或者说'光谱倒置是否会发生'。

On the other hand, the condition of varying power spectrum and displacement is also considered.

同时，也对功率谱、位移发生变化的情况进行了分析。

The performance of the CNGs, including transmission efficiency, neutron flux, flux spectrum, divergency, uniform and gravity effect, have been analysed technically.

在满足导管出口中子束的均匀化效果前提下，模拟计算出弯导管后的直导管的最佳长度。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。