When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
This paper points out that the first-order perturbation photon flux produced by this system has not observed effect when GWs is different from frequency of Gaussian beam.
笔者指出，当入射引力波和高斯束不同频率时，高斯束谐振系统产生的一阶扰动光子流没有观测效应。
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 acoustooptic interaction in biconical optical fiber was analyzed based on coupled mode theory, and the relationship between perturbation period and flexural wave frequency was discussed.
利用耦合模理论分析了在双锥光纤耦合区中声光的相互作用，讨论了在不同耦合区半径下扰动周期与声波频率的关系。
The natural longitudinal or torsional vibration of a wedge-shaped shaft is studied with perturbation method. The vibration mode function and the frequency characteristic equation are derived.
采用摄动法研究了楔形杆轴的固有纵扭振动，并且推导出了其固有纵扭振动的振型函数及频率特征方程。
The results show that the effect of second-order perturbation results on the natural frequency of arch bridge can be ignored.
结果表明二阶摄动结果对拱桥固有频率的影响可以忽略；
A wetness measurement system based on cavity perturbation method is designed for precise measuring, including automatic frequency tracing system and equal precision frequency measurement system.
以汽轮机内蒸汽湿度的准确测量为目的，设计了基于微波谐振腔微扰法的蒸汽湿度测量系统：自动频率跟踪系统和等精度频率测量系统。
This paper focuses on the perturbation which takes the sine form. The effect of amplitude, frequency, wave number, and initial phase difference on the propagation of optical soliton is investigated.
重点讨论了扰动是正弦函数形式时，耦合强度、频率、波数、初始相位差对光孤子传播的影响。
In this paper, resonant frequency of the deformed circular microstrip antennas is investigated based on variational principle and the perturbation concept.
本文用变分法并结合微扰理论分析了一种变形圆贴片宽频带微带天线的谐振频率。
The acoustic analysis with computer indicated that pitch perturbation and width of frequency in electrolaryngeal voice were approximated to those in normal voice ( P >0.05).
计算机声学分析表明电子喉音的音调扰动值和频带宽度与正常人的喉音比较差异无显著性（P >0 .0 5 ）。
Secondly, we have studied the effect of filters by the use of perturbation theory and derived the evolution equation of the soliton pulse in the presence of sliding frequency.
第二部分同样用微扰理论来研究滤波器的作用，导出了频域滤波孤子传输系统的脉冲演化方程；
The perturbation method was employed to get the control equation's approximate solution. The analytical expressions of beam's natural lateral vibration frequency and displacement were derived.
采用摄动法求得了其近似解，得到了载流梁在磁场中的横向固有振动频率及位移解析表达式。
The ordinary matrix perturbation method fails to deal with the structural system of repeated or closed frequency modes.
当系统具有重频或近频耦合模态时，常规的矩阵摄动法失效。
Taking higher frequency modes into account, an accurate expansion method based on the improved first-order perturbation is put forward, which can improve the precise of modes obviously.
为此，考虑到高阶模态的影响，提出了基于改进一阶摄动法的模态高精度展开法，算例表明，此方法能显著地改善摄动特征解的精度。
The frequency stability, amplitude stability and harmonic content can be deduced from the second order perturbation solution of that equation.
方程的二阶近似解显示出非线性效应对振荡频率稳定度、振幅稳定度及波形正弦纯度的影响。
The temperature sensitivity of the frequency as a function of quartz crystal anisotropy is presented by the perturbation equation due to the temperature change.
利用波扰动方程，分析研究了声表面波器件频率-温度敏感性与石英晶体各向异性参数之间的关系。
The effects of the sliding-frequency guiding filters on reducing soliton phase jitter were theoretically studied by perturbation theory.
采用微扰法，分析了滑频滤波器抑制孤子相位抖动。
By the aid of the phase shift-frequency characteristic, the conformal transformation and the perturbation theory, a new kind of compact, broadband waveguide phase shifter is developed.
借助相移-频率特性、保角变换和微扰理论，研制出了新型的宽带移相器。
The effect of the detuning of the stiffness of drilling spindle on the frequency of double spindle drilling machine is discussed by using Perturbation theory of nearly equal frequencies.
运用近频摄动理论分析了双轴钻床钻轴刚度失谐后对钻轴系统固有振动频率的影响。
The effect of the detuning of the stiffness of drilling spindle on the frequency of double spindle drilling machine is discussed by using Perturbation theory of nearly equal frequencies.
运用近频摄动理论分析了双轴钻床钻轴刚度失谐后对钻轴系统固有振动频率的影响。
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