【摘要】 通过对内部收益率的研究，解决了不同适用条件下内部收益率法的应用，提出了各种投资项目计算内部收益率的方法，从而很方便地对项目进行评价或择优更多还原

【Abstract】 Through the study of the interior return rate,the application of interior return rate is solved in different condition.The methods of calculating interior return rate in various investment projects are put forwared,thus making the evaluation or selection convenient for construction projects.更多还原