季节性变动是指某些现象受到季节变化和各种环境因素的影响，特别是气候条件。
... 时间序列趋势一般为线性的(linear)，二次方程式的 (quadratic)或指数函数(exponential function)。 季节性变动(Seasonal variation) 周期性变动(Cyclical variation) ...
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... 季节性比率 seasonal ratio 季节性变动 seasonal change 季节性迟后 seasonal lag ...
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季节性变动(seasonality-S) - 也称季节变动(Seasonal fluctuation) - 时间序列观察值在一年内重复出现的周期性波动 3.
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西红柿价格肯定程度上呈现季节性变动，但也是通胀上扬的症状。
Thee price of tomatoes is partly seasonal, but is also symptomatic of rising inflation.
郑和航线所经历的地区是世界上季风现象最显著的地区之一。盛行风的季节性变动，带来了洋流的季节性变化，为郑和航海提供了优越的条件。
The places Zheng passed by were where monsoon was very prominent, and the seasonal changes of prevalent wind would lend to seasonal changes of ocean current, thus greatly facilitating Zheng's voyage.
季节变动指数(SVI)用来拟合电力负荷的季节性趋势。
The seasonal variation index (SVI) is used to fit the seasonal trend of power load.
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