短語詞組短語bivariate discrete random variable 二維離散型隨機變量discrete isofactorial variable 離散同因子變量discrete time variable structure 離散變結構discrete design variable 離散設計變量multiple discrete spatial variable [數(shù)]多個離散空間變量discrete e variable 離散變量discrete decision variable 離散的決策變量discrete -variable problem 離散型問題discrete quantitative variable 間斷變量 返回 discrete variable