• The building of model of pressure-load character of main-pipe system is helpful to derive the calculation formula of main-pipe total steam load demand.

    系统压力负荷特性模型建立有助于推导母管蒸汽负荷需求的计算公式

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  • We could derive the supplier's optimum price and the consumer's optimum ordering quantity through separately establishing the profit function models of both sides of the supply and demand.

    通过分别建立供需双方利润函数模型导出供方定价需方的最优订货量

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  • But external factors have helped, too. In particular, a European Union directive requires Britain to derive 15% of its energy demand from renewables by 2020.

    其中同样外部作用,尤其是欧盟促进可再生能源使用指令要求到2020年,英国必须有15%电力来源于可再生能源。

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  • But external factors have helped, too. In particular, a European Union directive requires Britain to derive 15% of its energy demand from renewables by 2020.

    其中同样外部作用,尤其是欧盟促进可再生能源使用指令要求到2020年,英国必须有15%电力来源于可再生能源。

    youdao

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