除了振幅和波长，周期波有它自己的频率。
In addition to amplitude and wavelength, a periodic wave is characterized by its frequency.
研究了这些周期波之间的相互作用，发现其相互作用是非弹性的。
The interaction properties of periodic waves are found to be inelastic.
通过相图中的各种轨道，获得了孤立波，扭子波和周期波的精确解。
By the orbit in the phase portraits, different kinds of solitary wave, kink wave and periodic wave solutions are obtained.
与实测资料比较发现，两者变化趋势基本一致，在短周期波时吻合较好。
The theoretic model is consistent with the observations, especially for short period wave.
用微分方程分支理论和计算机数值模拟方法研究广义CH方程的周期波解。
The periodic wave solutions of the generalized CH equation are investigated by using bifurcation theory of differential equations and numerical simulations.
将周期杆梁结构看成一维周期波导，推导了结构中弹性波传递矩阵的表达式。
The periodic bar and beam structures are modeled as one-dimensional periodic wave-guides and the expression of transfer matrix of elastic waves is derived.
利用微分方程解的几何定性理论，直接得到该方程存在有限振幅的周期波与孤立波解的存在条件。
Conditions for the existence of solutions to periodic and isolated waves of limited amplitude are directly obtained based on qualitative geometric theory for ordinary differential equations.
在积分常数为零的条件下，证明了该方程存在光滑孤立波解、不可数无穷多光滑周期波解、扭结波和反扭结波解。
When the integral constant is zero, the existence of smooth solitary wave solutions, uncountably infinite, many smooth periodic wave solutions, and kink and anti-kink wave solutions are proved.
首先通过变换关系和求解简单的常微分方程，得到了(3 +1)维破裂孤子方程丰富的孤立波解和周期波解。
Many of the exact solutions of (3 + 1) dimensional breaking soliton equation are obtained by using a simple transformation relation and solving the ordinary differential equation.
周期均值叠加法将随时间变化的水文要素序列分离成若干个周期波，然后将周期波进行外延，再进行线性叠加，从而获得预报结果。
The periodic mean superposition method can predict the result through decomposing the hydrological time series into several periodic waves, extrapolating the periodic waves, and linear superposition.
从各种随机噪声的轧制力信号这一复杂高频干扰周期波中分离出偏心信号，控制轧机在压下系统实现对偏心的补偿，以提高热轧带钢的厚度精度。
The system of roll mill press down is controlled to compensate the thickness variation of the hot strip mill so as to improve the hot-rolled strip thickness accuracy.
人们希望温度的时间系列尽可能地长，以便能研究各种波的振荡周期。
The time series of temperature are expected to be the longest possible so as to examine various modes of oscillation periods.
在快速眼动睡眠周期之间，我们还有非快速眼动睡眠，包括深度睡眠和慢波期睡眠。
In between cycles of REM sleep, we have non-REM sleep, which includes deep or 'slow-wave' sleep.
后来，安德里亚凡安绰波夫(Andreasvon Antropoff)在1924年，利诺斯·卡尔·鲍林(Linus C . Pauling)在1932年，都做出了类似预测。预测的依据是：周期表里的化学趋势。
Similar predictions were made later, by Andreas von Antropoff (1924) and by Linus C. Pauling (1932), based on chemical trends in the periodic table.
该方法可以灵活安排扫频周期，从而使调频连续波SAR的系统设计具有更大的自由度。
The method can provide flexible scan cycle which brings great freedom in SAR system designing.
周期也将从波列的开头到尾部逐渐变短。
The periods will then decrease from the beginning of the train to the end.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系；
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
全波傅氏算法是基于周期信号推导出来的，当采样信号中含有衰减直流分量时，将会产生误差。
The decaying DC component in the sampling signal will bring errors to the full-wave Fourier algorithm, which is derived with periodic signal.
采用改进的界面重参数方法，讨论了周期边界条件下同质双层铁磁膜中自旋波本征激发问题。
The eigen problems of spin waves in a homogeneous ferromagnetic bilayered system with periodic boundary conditions are solved by using the improved interface-rescaling approach.
本文就此进行了初步分析，认为强震前的预滑移可能产生这种长周期的形变波，它们对大震预报有一定意义。
In this paper we analyze these data and find that the deformation wave of long period comes from pre-movement before a strong earthquake.
针对压电周期结构中弹性波的局部化问题进行了研究。
Localization of elastic waves in periodic piezoelectric structures is studied.
第二个实例是自引力介质中弱非线性波的渐近周期解及色散关系。
The second example is the asymptotic periodic solution and the dispersion relation of weakly non-linear waves in a self-gravitating medium.
在考虑海浪对建筑物作用时，人们往往强调波高而对周期重视不够。
Under consideration of wave action on the structures, wave height is often recognized as more important than wave period.
用这种方法得到的新的类周期解在极限条件下可以退化为类孤立波解或类冲击波解。
And new periodic solutions obtained by this method can be reduced to the soliton-typed solutions under the limited condition.
本文在原有定性分析方法的基础上，提出基于年径流时间序列主周期小波系数加权求和预测周期成分的年径流预测模型。
Based on the primary qualitative method, we propose an annual runoff prediction model using weighted sum of wavelet coefficients of major periods to predict the periodic components.
我们还进行了波高和周期的概率分布分析，说明波高符合瑞利分布，周期接近正态分布。
Analysis of the probability distribution of wave heights and periods show that wave heights fit the Rayleigh distribution and wave periods approximates the normal one.
实验处理的结果表明：该方法不仅对微屈多次波有效，而且对残余的长周期鸣震多次波也可达到令人满意的压制效果。
The experiment processing results demonstrate that the method can not only sufficiently attenuate the peg-leg multiples but also eliminate the long-period residual multiples to a satisfactory effect.
实验处理的结果表明：该方法不仅对微屈多次波有效，而且对残余的长周期鸣震多次波也可达到令人满意的压制效果。
The experiment processing results demonstrate that the method can not only sufficiently attenuate the peg-leg multiples but also eliminate the long-period residual multiples to a satisfactory effect.
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