建立了折衷考虑资源、时间和成本约束，以及决策节点的多项目环境下的经营过程配置优化解析模型。

The analytic model of business process assignment optimization is presented to undertake the trade-off among resource, time, cost constraints and decision nodes in multi-project environment.

youdao

最后，通过数学抽象，建立了在一般情况下，矿山生产规模与基建投资、经营成本、总成本关系的数学模型。

At last, by mathematical abstracting we can set up the general mathematical models to deseribe the relation of producing capacity between capital cost, cost of operation and total cost.

youdao