它能激发大约3对波动，这些波动主要沿“大圆路径”传播，对中高纬的环流形势有重要影响。
It can motivate about 3 pairs of waves that propagate along a "great circle route" and significantly affect the general circulation in mid-high latitudes.
本文研究表明，上述影响因素的二阶经向变率的存在条件对于“大圆路径”形成起了重要作用。
The analysis indicates that the conditions of second derivative of the above relevant factors play an important role in the formation of great circle route.
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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