quantity variation series 变量数列

seasonal variation series 季节变动序列

series of variation 变异序列

homologous series variation 变异同源系

Series Variation 系列变换

time series variation 时间序列变化

Time-series variation 时间变动

erratic variation in time series [数] [统计] 时间序列的不规则变动

time series variation characteristics 时序变化特征