查询词典 oscillation method

This paper is composed of three chapters, which respectively discusses the following impulsive delay difference equations with discrete variables and continuous variables:In chapter 1, we investigate the oscillation and nonoscillation of equation and some sufficient conditions for oscillation and nonoscillation are obtained. Consequently we extend these results to the difference equations with several delays and with nonlinear impulsive perturbations and with variable delays respectively.

本篇论文由三章组成，分别讨论下面四类具离散变量和连续变量的脉冲差分方程这里p≥0，Q＞0，当n∈N(0)时；p∈C(-1，∞)，R~+，Q∈C

A low frequency oscillation on-line monitoring and oscillation characteristics off-line analysis function module of power system based on wide area measurement systems was designed and implemented.

介绍了基于广域测量系统的电力系统低频振荡在线监测及振荡特性离线分析功能模块的设计及实现方法。

Finally, the so called critical oscillation frequency can be expressed as a function of oscillation amplitude and Grashof number in all the natural, mixed, and forced convection scenes.

最后，有关临界振动频率的经验公式在强制对流、混合对流以至於自然对流的形式皆不相同，本文皆已分别推导出来，且在三种的对流形式中都有相当平滑的曲线可以获得。

At the same time, the amplitude and the oscillation period of the reversible oscillation were increased largely.

从而扩展了盐水振荡的应用范围，在二次电池的开发方面有广阔的应用前景。

The short period mode is an oscillation of the pitch of the aircraft at mainly constant speed while the phugoid mode is an oscillation of the pitch at mainly constant angle of attack.

短周期是在等速运动下飞机俯仰的振荡，长周期是在攻角保持定值下飞机俯仰的振荡。

The area and the intensity of the SAH have 3.8-year oscillation period, which is consistent with the well known quasi 3-year oscillation period of the ENSO, and the years with the larger area and stronger intensity of the SAH are mostly consistent with the years of El Nino.

其明显的年际变化和年代际变化特征与热带海温异常密切相关，南亚高压的面积和强度的变化存在3.8年的主振荡周期，与ENSO循环的周期一致，并且高压面积大、强度强的年份往往与El Nino年相对应。

In the experiment the time-average coolant mass flux is varied from 300 to 400 kg/m2s and the amplitude of the coolant mass flux oscillation is fixed at 0%, 5% and 10% of . The period of the coolant mass flux oscillation varies from 10s to 30s.

在实验参数范围上，介电液FC-72平均质量通率从300到400 kg/m2s而且流量的振荡振幅为0%、5%、10%，流量的振荡周期为10秒到30秒。

Often divided into two types:(1) sine wave oscillator, according to the network oscillation frequency of the different loop selected further divided into RC sinusoidal oscillator, LC sinusoidal oscillators, quartz crystal oscillators, voltage-controlled oscillator, voltage-controlled crystal oscillator and other forms;(2) non-sinusoidal oscillation device, also known as relaxation oscillator, is the use of capacitor charging and discharging and active device (transistor, FET, single-junction transistor, etc.) to generate the pulse-off square wave, rectangular wave, triangle wave, sawtooth wave, or these basic waveforms synthetic waveform and its frequency by the LC time constant charge and discharge circuits to decide.

常分两大类型：（1）正弦波振荡器，根据振荡环路中选频网络的不同，又分为RC正弦波振荡器、LC正弦波振荡器、石英晶体振荡器、压控振荡器、压控石英晶体振荡器等多种形式；（2）非正弦波振荡器，又称张弛振荡器，是利用电容充放电及有源器件（晶体管、场效应管、单结晶体管等）的通断来产生脉冲方波、矩形波、三角波、锯齿波或这些基本波形的合成波形，其工作频率由LC充放电电路的时间常数来决定。

The first-step research work of electro-hydraulic servo oscillation system on Baosteel Continuous Casting Testing Platform is introduced.The results of hot-test show that the oscillation system runs reposefully and reliably.

0前言现代连铸技术的快速发展，对结晶器振动技术的自动化水平，以及振动与工艺的适应柔性都提出了更高的要求，促成了结晶器液压振动技术的产生。

In this thesis, a circadian oscillation model is studied from the point of view of theoretical analysis. The circadian oscillation model is analyzed using the theory of delay differential equations.

本文从理论分析的角度出发，运用时滞微分方程的相关理论，对昼夜节律模型做了一定的理论分析。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。