The method of NPV index is one of the methods that chooses the optimum plan of independent alternative for fund-limited enterprises.
净现值指数排序法是解决资金预算总额有限情况下独立型方案选优问题的方法之一。
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The present author aims to discuss primarily on the global warming issue in conjunction with the optimum selection of alternative refrigerants for various application of refrigeration technology.