例句與造句

1. Ces production function
   不變替代彈性生產(chǎn)函數(shù)
2. First of all , both r & d labor and r & d capital input variables are introduced into the input vector , and a two - level ces production function model is constructed to describe the technology of production . then the firm - level cross - section data of shanghai ’ s main manufacturing industries in 2003 is employed to study the input - output effect of r & d as well as the substitution relationship among input factors . moreover , the thesis also makes a methodological discussion of multicollinearity , and proposes a feasible approach to deal with the problem
   首先,在生產(chǎn)函數(shù)的投入要素向量中引入r & d投入變量,包括r & d人力投入和r & d資本投入;然后,結(jié)合相關(guān)的研究經(jīng)驗和本文的研究目的,構(gòu)建了相應(yīng)的二級ces生產(chǎn)函數(shù)模型;在此基礎(chǔ)之上,采用2003年上海主要制造業(yè)企業(yè)的橫截面數(shù)據(jù),分行業(yè)研究了r & d投入對產(chǎn)出的作用以及r & d投入與非r & d投入之間的替代關(guān)系。
3. It's difficult to find ces production function in a sentence. 用ces production function造句挺難的