Another measure of the efficiency of investment is the incremental capital - output ratio ( icor ) : the investment needed to generate an additional unit of output , measured as annual investment divided by the annual increase in gdp 对投资效率的另一种衡量是投资产出增量比:即每增加一单位产出所需的资本量,以用年度投资额除以gdp的年增量来计算。
The Incremental Capital-Output Ratio (ICOR), is the ratio of investment to [which is equal to 1 divided by the marginal product of capital]. The higher the ICOR, the lower the [[productivity of capital.