There exist obviously interannual and interdecadal changes in the heat sources over the Bay of Bengal and Philippines.

夏季孟加拉湾热源和菲律宾热源都存在明显的年际和年代际变化。

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Analyses of the interannual and interdecadal changes of the two precipitation patterns show that the precipitation character in west China has been changed since the mid-1970s.

分析了两类雨型的年际变化和年代际变化，显示西部降水特征在70年代中后期出现了明显转折。

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Analyses of the interannual and interdecadal changes of the two precipitation patterns show that the precipitation character in west China has been changed since the mid-1970s.

分析了两类雨型的年际变化和年代际变化，显示西部降水特征在70年代中后期出现了明显转折。

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