derive demand

基本解釋

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.
其中同樣也有外部作用，尤其是歐盟促進可再生能源使用指令，其要求到2020年，英國必須有15%的電力來源于可再生能源。
In section three I introduce and study the related models of information retrieval and derive more applicable model expressing user demand and receive required information.
第三部分重點介紹相關的信息檢索模型，并對其進行比較研究，從而得出更適合用戶表達檢索需求和用戶獲得所需信息的檢索模型。
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.
母管系統(tǒng)壓力負荷特性模型的建立有助于推導母管蒸汽總負荷需求的計算公式。

Corporations, especially multi-nationals that derive much of their business overseas, are facing slowing demand because of the weakening global economy, weighing on profit margins.
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