The regularity of the change of the unstable oscillation wave form and the structure of the power spectrum were analysed.
计算并绘出了非稳区域边界，分析了非稳振荡波形变化规律及其模结构。
By increasing the inertia of riser in the core outlet, the compressible density wave oscillation can be suppressed effectively and the system stability can be enhanced.
加大堆芯出口水力提升段的质量惯性能有效地抑制可压缩性密度波振荡，提高系统的稳定性。
As an example, the oscillation of a rectangular harbour due to the incident waves with different directions and wave Numbers was investigated.
作为算例，就一矩形港湾在不同方向、不同波数入射波情况下的港内水波振动问题进行了计算分析。
The flow-induced self-sustaining oscillation and standing wave resonance of protruding and trap cavities are studied at the low speed range.
本文研究了低流速范围内突出式和陷落式圆柱形腔的流激自持振荡和驻波共振问题。
The frequency modulation effects of positive dipole (unipole) forcing source on LFO is stronger than negative dipole (unipole), and the wave oscillation quicken evidently.
正偶(单)极强迫源对大气低频振荡的调制作用强于负偶(单)极，波动振荡明显加快。
Considering the competing effect of Raman scattering, the dependence of intensity of parametric backward wave oscillation on the pumping intensity is obtained.
考虑受激喇曼散射的竞争效应，求得了简并四波混频后向波参量振荡信号强度与泵浦输入强度的关系。
The conclusion derived is: it is possible to realize the integration of wave compensation and anti-oscillation and to develop special crane at current level technology.
最后得出结论：现有技术水平能够实现海浪补偿与防晃一体化，研制特种起重机是可行的。
The effect of spring mass on oscillation frequency and elastic constant is discussed by solving the wave equation.
通过求解弹簧中纵波的波动方程，讨论了弹簧质量对振子的振动频率及弹簧劲度系数的影响。
The resonance condition of resonator of the static gas wave refrigerator and its oscillation character are analyzed.
分析了静止式气波制冷机振荡源共鸣器的共振条件并对其振荡特性进行了实验研究。
As the ion inertial length increase, the wave train becomes broader and the number of oscillation periods in the wave train are reduced.
当继续增大离子惯性长度时，波列会变得宽阔，波列中的振荡周期数目减少了。
Results show that, wave of the pressure, the film thickness and the fractional film contents in the roller contact area can be caused by the oil-supply oscillation.
结果表明：供油油膜的波动导致滚子副接触区相应的压力、膜厚及部分油膜比例分布中也出现波动；
Mechanism of the oscillation instability is then illuminated in frequency domain by amplification at the artificial boundary and multi-reflection of wave motion in a finite discrete model.
根据波在人工边界的放大效应和在有限离散模型中多次反射的概念在频域内阐明了这一常见的振荡失稳的机制。
The solution of the nonlinear wave equation describing propagation of a femtosecond laser pulse with duration of several optical oscillation periods in a nonlinear fiber is presented.
给出了描述具有几个光振荡周期的飞秒激光脉冲在非线性光纤中传输方程的解。
One of the more severe fluctuating pressure environments encountered in supersonic or hypersonic flows is the shock wave oscillation driven by interaction of a shock wave with boundary layer.
在超声速或高超声速绕流中，一种很严重的脉动压力环境是由激波边界层相互作用引起的激波振荡。
This paper analyses oscillation character of the Static Gas Wave Refrigerator when its oscillators are interline and resonator respectively.
分析了静止式气波制冷机振荡源共鸣器的共振条件并对其振荡特性进行了实验研究。
And the wave of combustion propagated with the means of oscillation and spin.
燃烧波以振荡与螺旋相结合的方式存在。
Spectrum analysis reveals the frequency characteristics of vortex breakdown point oscillation and spiral wave.
频谱分析确定了破裂点脉动和螺旋波的频率特征。
This paper describes the experimental study of two phase density wave oscillation in natural circulation loop. The oscillation curves under different conditions are obtained.
在自然循环水回路上进行了两相流密度波不稳定性的实验研究，得到了不同工况下的实时脉动曲线。
The results show that the periodic oscillation of the immediate distortion is caused by the pulsed laser wave.
结果表明，激光的脉冲作用引起瞬时变形周期性振荡；
Oscillation wave being flexibly changed on-line made the realization of technology test research easy. Oscillation system can satisfy need of technology development.
振动波形的在线灵活变化，使工艺试验研究的实现变得非常简便，满足了工艺技术开发的需求。
The results show that the second order wave force has an effect on the slow oscillation of the floating tower in surge direction.
计算结果表明，波浪的二阶作用对浮式塔的低频纵荡有影响。
With these solutions, change of nonlinear reflectivity with the pump waves and the probe wave, and saturation, and parameter oscillation arc-described.
对饱和现象（泵浦抽空）、非线性反射率随探测波的变化以及参量振荡等给出了令人满意的定量描述。
The study of long-period seismic wave is significant to the seismic design of the large-span engineering structures with long auto-oscillation period.
用丰富的高质量数字强震记录对台湾集集大地震及余震的长周期地震动特性进行了研究。
The study of long-period seismic wave is significant to the seismic design of the large-span engineering structures with long auto-oscillation period.
用丰富的高质量数字强震记录对台湾集集大地震及余震的长周期地震动特性进行了研究。
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