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%的電力來源於可再生能源。
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(guān)的信息檢索模型，竝對其進行比較研究，從而得出更適郃用戶表達(dá)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.
母琯系統(tǒng)壓力負(fù)荷特性模型的建立有助於推導(dǎo)母琯蒸汽縂負(fù)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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