降水低频振荡呈现明显的由南向北的经向传播。
The low frequency oscillation of monsoon rainfall propagate in meridional direction from the south to the north.
最后分析了热带季风低频振荡与梅雨活动的可能联系。
Besides, the possible relationship between the LFO of the tropical monsoon and Meiyu occurrence is discussed.
外源强度越强（弱），大气低频振荡周期将缩短（延长）；
The stronger (weaker) the external source , the periods of LFO the shorter (longer);
对于天气尺度系统，海温热力场则主要激发出大气低频振荡。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low - frequency oscillation.
对于天气尺度系统，海温热力场则主要激发出大气低频振荡。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low-frequency oscillation.
上述结果对研究低频振荡燃烧机理和抑制技术有一定的参考价值。
The above experimental result is of value for the mechanism and suppression of low frequency combustion oscillation in an afterburner of a turbofan engine.
该研究结果对探讨电力系统低频振荡的原因具有一定的参考价值。
The conclusion can provide reference to research into the causes of power system low frequency oscillations.
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.
电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。
Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
该分析揭示了电力系统产生超低频振荡和倍频振荡的可能性和条件。
It reveals the probability and conditions of extra-low frequency oscillation and double frequency oscillation in power systems.
该研究结果对探讨电力系统低频振荡的产生原因具有一定的参考价值。
The conclusion can provide reference to research into the causes of power system low frequency oscillation .
可控串联补偿(TCSC)对于阻尼电力系统低频振荡具有重要意义。
Thyristor controlled series compensation (TCSC) possesses important meaning in damping low frequency oscillation in power system.
在我国大区交流互联系统中存在着区域间弱阻尼或负阻尼低频振荡问题。
In domestic AC interconnected area power grids the low-frequency oscillations still exist due to insufficient damping.
结合鄂西电网的特点研究其抑制低频振荡的原理和方法，提出相应解决措施。
Combining network characteristics of west Hubei, the principle and method for suppressing low frequency oscillation are studied, and the corresponding measures are presented accordingly.
最后，应用复系数转矩分析法研究了可控串联补偿实现抑制低频振荡的机理。
At last, the reason of why the TCSC can restrain the LFO is given by use of the plural coefficient torque method.
分析了步进电机产生低频振荡的原因，提出了一种新控制方法—脉宽调整法。
The way of pulse-width adjustment which can change the size, the direction and the action time of the electromagnetic resultant force in the stepping motor.
在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.
电力系统稳定器参数的优化对于抑制多机电力系统低频振荡具有非常重要的意义。
Parameter optimization of power system stabilizers is very important to restrain the low-frequency oscillation of multi-machine systems.
所得结论对于电力系统低频振荡的抑制以及电力系统稳定运行具有重要的参考价值。
The conclusions provide the important reference for the suppression of low frequency oscillation and stable operation in power system.
在同步发电机组调速器侧装设电力系统稳定器是抑制电力系统低频振荡的有效措施。
Fixing power system stabilizer on the governor of synchronous generator is an effective method to restrain low frequency oscillation.
传统的PSS使用本地可测量的发电机电磁功率、转速等作为输入信号以抑制低频振荡。
The traditional PSS use the local signal such as the generator electromagnetism power or shaft speed as its input to restrain low frequency oscillation.
正偶(单)极强迫源对大气低频振荡的调制作用强于负偶(单)极，波动振荡明显加快。
The frequency modulation effects of positive dipole (unipole) forcing source on LFO is stronger than negative dipole (unipole), and the wave oscillation quicken evidently.
使低相噪vco的设计及调试能免于低频振荡的干扰，从而有利于提高VCO的各项指标。
This makes design and producing VCOs can avoid the disturbing of low frequency oscillation, and improve the features of VCOs.
同步发电机整流带反电动势负载时，当系统参数不匹配，在一定工况下，可能出现低频振荡。
For some operating conditions, a synchronous generator with a rectifier and back-EMF load maybe exhibit low-frequency oscillations when the system parameters do not match.
基于线性化等面积法则和小干扰分析方法，提出储能系统抑制电力系统低频振荡的原理和方法。
Based on the linearized equal area criterion and small signal analysis, the Principle and techniques of Energy Storage System(ESS) Damping Power System Oscillations are proposed in this paper.
研究机组之间存在水力联系的水电站中，两台机组采用扩大单元接线对系统低频振荡阻尼的影响。
According to two units with hydraulic coupling in hydropower plants, the effect of expanded unit connection to low frequency oscillations damping was studied in detail.
仿真结果表明所设计的模糊电力系统稳定器比传统的电力系统稳定器能更有效地抑制系统低频振荡。
The simulation results indicate that the designed fuzzy power system stabilizer is better than the conventional fuzzy power system stabilizer in suppressing the low-frequency system swing.
其结论对系统中低频振荡和次同步振荡的抑制提供了理论依据，对系统的安全稳定运行有参考价值。
The conclusion provides academic bases to restrain LFO and SSO and is significant to the security and stability of power system.
同步转矩及阻尼转矩是两个在动态稳定研究中广泛应用的概念，它们对于电力系统低频振荡分析尤为重要。
Synchronizing torque and damping torque are two concepts widely used in dynamic stability studies and especially important to low-frequency oscillation analysis.
同步转矩及阻尼转矩是两个在动态稳定研究中广泛应用的概念，它们对于电力系统低频振荡分析尤为重要。
Synchronizing torque and damping torque are two concepts widely used in dynamic stability studies and especially important to low-frequency oscillation analysis.
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