短語詞組短語life -expectancy analysis 壽命預(yù)計(jì)分析life spanlife expectancy 壽命expectation of life life expectancy 平均壽命loss of life expectancy 預(yù)期壽命損失;預(yù)期損失;壽命損失法;預(yù)期壽命損失法contact life expectancy 觸頭預(yù)期壽命Life expectancy experimental 壽命實(shí)驗(yàn)Page life expectancy 頁生命周期life expectancy calculation 預(yù)期使用壽命計(jì)算 返回 life expectancy