After making the analysis of the distribution of inter - enterprises and intra - enterprises technology innovation , the conclusion is reached that the distribution speed is in invers proportion to the period of investment returns when applying new technologies , and proportional to industrial growth speed 对企业间和企业内技术创新的扩散进行了分析，得出了“扩散速度与采用新技术的投资回收期成反比，与工业增长速度成正比”的结论。
The results indicate that thermostatic radiator valves can regulate and control indoor temperature effectively and save heating energy consumption , and that using thermostatic radiator valves can produce good economic benefit because the initial investment is lower and the payout period is shorter 分析结果表明散热器恒温控制阀可以有效调控室内温度和节约供暖能耗；恒温控制阀初投资低和投资回收期短，在实际应用中可以产生良好的经济效益。
The equipment has been put into operation after installation , the actual operation shows the newly designed exhaust boiler reached the design load , s table operation . the economic efficiency increased apparently . the total investment was 5 million yuan , the comeback time of invest only 6 months 此设备安装完毕已投入运行，实际运行工况表明，新设计的余热锅炉达到设计负荷，工况稳定，经济效益显著增长，投资500万元，投资回收期仅为六个月。
98 % per year . about after one and a half year you can take back your investment . this thesis illustrates the investing plan from dm ' s concept , environment , marketing , human resource and financial management etc . . it analyzes the investing channel targeting person and cored production 公司需要初始投资200万人民币，投资回报率为年34 . 98 ，第一年实现单期盈利，保持现金流为正，投资回收期2 . 81年，贴现投资回收期3 . 18年，有望实现盈亏平衡，收回投资。
The desired type of heat exchanger is determined by considering economic factors such as the total costs , comprised of the capital and operating costs . the cost - effectiveness of investments of each system is discussed , with parameters , such as the payback period , net present value and internal rate of return 分别计算了上述三种系统的cop 、逐月制冷制热量，并分析了初投资、运行和维护费用、投资回收期、净价值以及偿还利率等经济学参数对不同系统的影响。
Section four shows the study of the economic effect evaluation on the extend project of the liyujian power plant . a economic effect evaluation is a core material of evaluating investment projects , in which the indices being used is also very important as they represent the economic degree of the project . indices of invest return circle , invest return rate , net present value , net annual value , internal return rate , external return rate , sensitivity analysis are used in this project and the conclusion that the project brings both satisfactory economic benefit and significant social payback 经济效果评价是投资项目评价的核心内容，而经济效果评价的指标又是非常重要的，它们从不同角度反映项目的经济性，本文选择了投资回收期、投资收益率、净现值、净年值、内部收益率、外部收益率、敏感性分析等指标进行了定量分析及评价，并得出了结论：扩建工程项目不论社会效率，还是经济效益都是很好的。
Abstract : the dynamic calculation of the additional investment recovery period was discussed on the theoretical basis of the original compersation period calcuation . the investment recovery period in the design has been adopted to substitute the formerly prescribed standard time period . the results of the additional investment were evaluated and an optimal engineering plan is determined 文摘:在原抵偿年限计算的理论基础上，对追加投资回收期的动态计算进行探讨，采用了以设计方案的投资回收年限，替代原规定的标准年限值，对追回投资回收期的结果进行评价，从中选择最优工程方案
