周期

On the basis of state space model of system dynamics, the decomposition of periodic term and trend term in the time series of both power demand and Gross Domestic Product are carried out respectively, and it is discovered that there is a strong correlativity between the periodic term...

文章基于系统动力学的状态空间模型对电力需求与国内生产总值(GrossDomesticProduct，GDP)增长率时间序列分别进行周期项与趋势项的分解，发现电力需求与GDP分解的周期项之间存在很强的相关关系；基于此关系及电力需求增长率序列数据自身的变化规律，采用计量经济模型预测了2004~2008年我国电力需求增长率，以期为当前的电力规划工作提供参考数据。

Modeled with maximum entropy spectrum analysis and prominent period stacking, the historical earthquake activity in Guanting reservoir and its surrounding area is studied. The earthquake risk of the area in the next fifty years is predicted with the prominent periods that we obtained.

利用最大熵谱分析与显著周期叠加建模的方法，首先对官厅水库及邻区的历史地震活动进行最大熵谱分析，然后利用所得到的显著周期进行建模，最后对未来50年内官厅水库及邻区的地震危险性进行了分析和预测。

Invariant Manifold: An unstable periodic orbit in a Hamiltonian system (a general class of differential equations which includes the three body problem) have associated two families of orbits forming tubes connected to the periodic orbit.

不变流形：一个不稳定的周期轨道的哈密顿系统（一个微分方程一般类，其中包括三个体问题）有关联的两个形成连接管轨道周期轨道的家庭。

Your scientists think that these few new suns spots are of the next cycle, but they do not understand that the Sun is also going to be completely monopolar and it will not thusly experience cycles.

你们的科学家认为那些少量的新太阳黑子预示着一个新的周期，但是他们不明白太阳即将转变为单极，因此它将不再经历周期。

The growth cycle of human soecity is actually similar with the individual's. The commotion is the omen of its to-be maturity phase.

人类社会的发展周期和人的成长周期其实是同样的，青春期的躁动也是人类即将进入成熟期的征兆。

An image processing algorithm was developed to acquire topside and backside sizes of weld pool.

分析了一个脉冲周期内不同时刻的熔池正反面图象，获得了在脉冲周期内最佳的取象焊接电流和取象时刻。

If we have used the trade cycle method, a reasonable period of time would be one cycle.

如果使用交易周期方法，则合理时间段应为一个周期。

This thesis intends to expound the business cycle theories and then further study will be given on the trade transmission mechanism of economic cycle, finally the thesis will discuss the economic correlations between China and other countries in the process of both economic growth.

本文旨在对经济周期理论进行较为详尽的考察，然后进一步研究贸易对经济周期传导机制的关系，最后本文还将提出我国在发展经济的过程中，同世界相关国家的经济相关性。

Chapter three studies the international trade transmission mechanism of business cycle, firstly it expounds the function of trade for the economy of one country, and secondly it analyzes the process of the transmission mechanism, which is also the theoretical basis of the next chapter.

第三章主要研究了国际贸易对经济周期的传导机制，首先论述了对外贸易对一国经济的作用，然后通过相关的模型分析了国际贸易是如何在国家间来传导经济周期的，这一章也是下一章的理论基础。

The transmission spectrum of long period grating was analized by a combination of coupled mode theory and transfer matrix method.

用耦合模方法和传输矩阵法相结合对长周期光栅的传输光谱特性进行了研究，提出了用相移长周期光栅使双峰的增益谱线平坦化。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。