采用复经验正交函数(CEOF)方法分析了准40天振荡沿赤道和某些大圆路径传播的规律。

The regular patterns of the propagation of quasi-40-day oscillations along the equator and some great circle routes are analysed and revealed by a complex empirical orthogonal function (CEOF) method.

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此外，有两点值得一提：1）序参量是一和频率有关的复量，且呈现出振荡的行为。

Furthermore, two points are worth mentioning: 1) the order parameters are frequency dependent complex quantities and present an oscillatory behavior;

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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.

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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.

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