短語詞組短語trend line extrapolation 直線外推法trend extrapolation method 分析法technological trend extrapolation 翻譯;技術(shù)趨勢推斷historical trend extrapolation method 歷史趨勢外推法trend extrapolation model 回歸趨勢模型trend logarithmic curve extrapolation model 外推對數(shù)曲線模型 返回 trend extrapolation