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.
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。
It is pointed out that the existence of singular straight line in the traveling wave system is the factor that causes smooth periodic wave to converge periodic cusp waves.
利用动力系统分支理论研究了广义KP-BBM方程,给出了该行波系统的相图,指出奇异线的存在是光滑周期波收敛到周期尖波的原因所在,获得了在不同参数条件下紧孤立子解和周期波解存在的充分条件和一些解的精确表达式。
By the orbit in the phase portraits,different kinds of solitary wave,kink wave and periodic wave solutions are obtained.
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。
In the light of the long-term trend and cyclical fluctuation of China's phosphate fertilizer out puts during the period of 1978～2005,the development of phosphate fertilizer industry in China is predicted,and some suggestions are proposed for improving this industry.
通过对我国1978~2005年磷肥产量的长期趋势和周期波动特征的分析,预测我国磷肥发展趋势,并对我国磷肥产业策略调整提出了几点建议。
The wave period can be obtained from the parameters.
据此进行波动过程分析,借助方程的参数,得到波动周期;通过波动方程对时间积分,可以定量分析剥蚀量;对波动方程进行分析,得到波动过程。
This paper, with tendency approach and the cyclic increasing approach, analyses the fluctuation period in our nation s grain production and its features from the start of the reform and open policy.
主要采用趋势法、环比增长法分析了改革开放以来我国粮食生产的波动周期及其特征,并利用定性与定量结合的分析方法探讨我国粮食生产波动的影响因素,主要分析的影响因素为农业投入、自然灾害、粮食价格以及农业经济政策等。
Solitary wave solutions and periodic wave solutions for Zhiber-Shabat equation;
Zhiber-Shabat方程的孤立波解与周期波解
The periodic wave solutions of the integrable Davey-Stewartson equations
一类可积的Davey-Stewartson方程组的周期波解
Then,the bifurcation phase portraits of the traveling wave system are drawn,and the special orbits corresponding to the explicit periodic wave solutions are detected by numerical simulation.
用动力系统分支方法和数值模拟的方法去寻找广义CH方程的显式周期波解,首先建立与非线性偏微分方程对应的平面系统,其次绘制出该系统的的分支相图并做计算机数值模拟,确定分支相图中与显式周期波解有关的特殊轨道,最后通过这种特殊轨道及椭圆函数、椭圆积分来获得显式周期波解。
Solitary Wave Solutions and Periodic Wave Solutions to Equal Width Wave Equation;
Equal Width波方程的孤立波解雨周期波解
Periodic Wave Solutions for Klein-Gordon Equation
Klein-Gordon方程的周期波解
A wave that repeats, like the one above, is called a periodic wave.
如上图所示的周期性的波，称之为周期波。
Bifurcation of Solitary Wave and Periodic Wave Solutions for BBM Equation;
BBM方程孤立波和周期波解的分支(英文)
THE EUROPEAN OPTION PRICING OF STOCK WITH CIRCLE EXPECTED RATE OF RETURN;
收益率周期波动的股票欧式期权定价
Peakons,Solitary and Periodic Solutions for Generalized Degasperis-Procesi Equations
广义DP方程的尖波解、孤立波类解和周期波解
Of or relating to the component of lowest frequency of a periodic wave or quantity.
基波的周期波或周期量的最低频率的分力的或与此有关的
In addition to amplitude and wavelength, a periodic wave is characterized by its frequency.
除了振幅和波长，周期波有它自己的频率。
Periodic Waves and Solitary Waves in Zakharov System by a Jacobi Elliptic Function Approach;
Zakharov系统的雅可比椭圆函数的周期波和孤立波
The Business Cycle in China;
中国经济周期波动特征分析:滤波方法的应用
Periodic Wave Solutions of a Dissipation-dispersion Nonlinear Wave Equation
一类耗散—频散非线性波动方程的周期波解
New Soliton Solutions and Periodic Wave Solutions with Cosine Function Form for the Generalized Pochhammer-Chree Equation
广义Pochhammer-Chree方程的新孤波解和余弦周期波解
Property Simulation of a Narrow Band-passed Optical Filter Based on Long-period Waveguide Grating
长周期波导光栅窄带光滤波器特性的模拟
(physics) the maximum displacement of a periodic wave.
（物理学）周期波偏离平衡位置的最大值。
The higher modes have shorter periods than the fundamental mode and, moreover, they have higher velocities.
高振型波比基阶振型波周期短，波速高。
The Periodic Loop Solutions of the Fornberg-Whitham Equation
Fornberg-Whitham方程的周期圈波解
The Periodic Loop Solutions of the Reduced Ostrovsky Equation
Reduced Ostrovsky方程的周期圈波解
Periodic-soliton Wave Solutions for Jimbo-Miwa Equation
Jimbo-Miwa方程的周期孤波解