对三参数序列应用功率谱和交叉谱分析得出，其主要周期变化为准两周振荡。
Analyzing the sequence of the parameters by the power and cross spectra yields main periodic changes of quasi-two-week oscillation.
采用波谱分析的方法对南海海表温度和云南省降水作出分析，通过功率谱以及交叉谱计算表明了云南省降水与南海海温之间的一些相关关系。
The relationship between the sea temperature on the South China sea and the rainfall in the Yunnan by means of cross spectrum AD power spectrum analysis.
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