运用成本效益比较分析法，给出了矿山利用表外矿的临界品位静态与动态分析模型。

Based on the application of cost - revenue analysis, this paper presents a set of mathematical models for both static and dynamic economic analysis of a mine's unbalanced-ore utilization.

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比较和成本效益研究。

Comparative - and cost-effectiveness research.

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相比之下，成本-效益分析则通过比较不同人群的获益和损失，提出改变规则的对策，使收益大于损害。

Incontrast, cost-benefit analysis weighs the gains and losses to differentindividuals and suggests carrying out changes that provide greater benefitsthan harm.

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