短語詞組短語time series variation characteristics 時(shí)序變化特征time -variation control 時(shí)間變化控制time frame variation coefficient 時(shí)間變異系數(shù)time space variation 時(shí)空變化Time delay variation 延時(shí)變化量Time sequence variation 時(shí)序縯化 返回 time variation