The stronger (weaker) the external source , the periods of LFO the shorter (longer);
外源强度越强（弱），大气低频振荡周期将缩短（延长）；
The main ill effect of LFO were acroparesthesia, blood routine change and gastrointestinal discomfort.
不良反应主要是肢端感觉异常、血象改变、胃肠道反应。
Besides, the possible relationship between the LFO of the tropical monsoon and Meiyu occurrence is discussed.
最后分析了热带季风低频振荡与梅雨活动的可能联系。
At last, the reason of why the TCSC can restrain the LFO is given by use of the plural coefficient torque method.
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。
The conclusion provides academic bases to restrain LFO and SSO and is significant to the security and stability of power system.
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 frequency modulation effects of positive dipole (unipole) forcing source on LFO is stronger than negative dipole (unipole), and the wave oscillation quicken evidently.
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.
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。
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