差额投资收益率
差额投资收益率-
差额投资内部收益率
Internal rate of return of incremental investment
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差额投资内部收益率法的问题剖析与改进
An Analysis for the Improvement of Delta IRR Method The Calculation of Rate of Return on Investment
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对于矿山开采方案比选，由于各方案服务年限、生产规模不一致，差额投资内部收益率法比较适合。
For the comparing and selecting of mining program , the method of the differential investment internal rate of return was suitable because of different service life and production capacity .