基本解釋[經(jīng)濟(jì)學(xué)]技術(shù)替代彈性詞組短語(yǔ)短語(yǔ)Elasticity of marginal technical Substitution 邊際技術(shù)替代彈性elasticity of technical substitution更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)技術(shù)替代彈性