基本解釋[經(jīng)濟學]技術(shù)替代彈性詞組短語短語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)濟學技術(shù)替代彈性