The marginal analysis provides a flexible and effective method, which can be used for the economic decision in many ways.
边际分析法提供了一种灵活而有实效的决策方法，可用于多方面的经济决策。
It is shown that the extended grey cluster appraising method developed by us is generalized and is more flexible in decision than the traditional grey cluster method.
研究表明，本文提出的灰色聚类评价的拓展模型更具一般性和决策的柔性。
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