The first principal component of the Southern Oscillation Index (SOI) is used as the intensity of annual SO.

用南方涛动指数(SOI)的第一主成分表示年涛动强度。

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An interesting feature is that this component is not a zonal wave type oscillation, but rather a meridional wave type fluctuation.

一个有趣的特征是这一分量不是纬向波型的振荡而是经向波型的振荡。

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The component of rotation along the velocity vector is used with the rotary balance test data and other components of the rotation vector are used with the forced oscillation test data.

旋转角速度的其它分量用于振荡天平试验数据，综合地使用了各类试验数据。

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