净年值

工程经济给出寿命期不等的互斥方案求解的多种解法，如最小公倍数寿命法、无穷大寿命法、研究期法、净年值法等，但对上述诸种方法之间的关系缺乏系统研究。

There are several solutions for exclusive projects in engineering economics , taking minimum common multiple lifetime method , infinite lifetime method , research period method and net annual value method as examples . There are no systematic researches for these solutions mentioned above .

在寿命期不等的互斥方案优选中，净年值法是一种合适的方法。

NAV is a proper method for comparison of the schemes with different life .

如果是两个以上的方案需要用净现值法、净年值法、费用现值法和费用年值法进行判断，从中选出最优方案。

When there are two or more options , then one must use net current value method , net year-end value method , cost current value and cost year-end value method to make a judgment and find the most optimal option .