Use the title to give a short, but precise description of the page's content.

请在该标题中简短精确地描述页面内容。

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On the basis of precise description of gas reservoir, a reservoir model has been established through numerical simulation.

在气藏精细描述基础上，应用数值模拟技术，建立气藏模拟模型。

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Pattern recognition methods, capable of advanced decision making without a precise description of the pro-cess model, have been used in many cases to implement advanced control systems.

模式识别方法本质上是一种分类方法，它不需要过程的数学模型就可做出高级决策。

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Senior officials in Brussels say a more precise description of the "veto" is that Herman Van Rompuy, who chairs the summits, closed off further discussions.

WSJ: Cameron's Plans Bring Fears, Schadenfreude