查询词典 oscillation

Secondly, oscillation energy function of inter-area mode oscillation is defined which can be regarded as a measure of the deflection away from the steady state position during dynamic oscillation period.

分析了功率振荡过程中能量函数的变化，提出了衰减振荡能量的阻尼控制策略，目的是使系统暂态能量以最快的速度归零，即回到故障后的稳定平衡点。

The characteristics of power oscillation of UPFC installed line are analyzed from the point of view of oscillation energy function,and a damping control strategy aiming at oscillation energy descending is developed.

文献[3]基于系统的某一运行工况设计出统一潮流控制器UPFC线性附加阻尼控制器，其缺点是不能很好地适应电力系统的强非线性及运行方式复杂多变的特点。

The conversion of energy function during oscillation period is analyzed and damping control strategy of reducing oscillation energy is proposed which aims at reducing oscillation energy to zero as quickly as possible, namely returns to the steady state position after fault.

第二部分采用Prony分析辨识系统传递函数，用补偿留数相位的方法设计FACTS阻尼控制器，提出了输入信号的选择方法。

Proceeding from the kinetic equation, the occurrence of muscular fibre spontaneous oscillation is explained in a natural way, the period of isotonic spontaneous oscillation and the oscillation curves are consistent with experimental data, and some new theoretical results are presented.

从动力学方程出发，肌纤维自发振动的发生条件得到了自然解释，所给出的振动周期和振动曲线同实验结果相符，并给出了一些新的理论结果。

It discusses testing means and testing equipment to oscillation, puts forward disposal means to oscillation data, fetches oscillation model of vehicle plane, does predigestion and coupling to all kinds of oscillations.

对振动的测试方法和测试设备进行了论述，提出对振动数据进行处理的方法，推导出车载平台的振动模型，对各种振动进行了相应的简化和耦合处理。

The main research is how to control and long term monitor the shaft torsional oscillation. The measurement technique of torsional oscillation is an important link of torsional oscillation control and monitor system and a basement to carry out the corresponding method.

扭振研究的主要内容是如何实现对轴系扭振的控制及长期监测，而扭振的测量技术又是扭振控制和监测系统的重要环节，是扭振控制与监测手段付诸实践的基础。

Due to the electro-mechanical coupling, the subsynchronous oscillation occurs in the system,which causes the oscillation of electric current, electric voltage and the torsional oscillation of the set of axes.

网机系统机电耦联失稳振荡的分岔与混沌研究项目，共发表学术论文30篇（期刊论文23篇，会议论文7篇），其中SCI收录3篇，EI收录9篇，ISTP收录3篇，使我们的研究大大超额完成任务。

In the research on the backward-wave oscillation suppression the startoscillation current which is derived from Two-wave theory approximately is given up. Four typical un-uniform slow wave structures start-oscillation current equations are derived by backward-wave amplifing gain expressions with the Two-wave theory. Then the start-oscillation current rates I〓/I〓 between ununiform circuit and uniform circuit of the four structures have been got.

在返波抑制问题的研究中，从二波理论出发，抛弃了二波理论中从起振条件出发来得到起振电流近似表达式的方法，而是利用二波理论的基本关系式分别推导出了四种典型实用的非均匀输出线路的返波增益表达式，采用计算返波增益的方法来得到四种非均匀输出线路的起振电流与均匀输出线路起振电流的比值I〓/I〓。

This paper also presents an improved oscillation circuit according to the expression of oscillation frequency, and puts forward another method of analyzing oscillation circuit.

根据振荡频率的表达式，给出一种改进后的电路，提出了振荡电路的另一类分析方法。

However, based upon the results indicated above the heat transfer rates with certain combinations of the oscillation amplitude and Rayleigh number or Grashof number are possibly smaller than that of the stationary condition. Then the critical oscillation frequency could be regarded as a criterion of whether the heat transfer rate of the heat surface subject to a oscillation motion being larger than that of the stationary state or not .

虽然一般的观念大都认为存在振动的热表面其热传的效果会比没有振动的情形下要好，但是由研究结果得知，在不同的振幅与雷利数或葛瑞秀夫数搭配时，加入振动后的热传现象仍可能比没有振动时的热传效率差，也因此可以定义且找出临界振动频率以提供研究振动热传者之参考。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。