Based on the DRASTIC model, the fuzzy analysis theory and method which are suitable for evaluating aquifer vulnerability are established and have been used in Cangzhou City.

以DR AST IC模型为基础，建立了评价含水层污染性难易程度的模糊分析理论与方法，并将其应用于沧州市区地下水系统脆弱性评价。

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The paper introduces seven factor of DRASTIC model: Depth of water table, Net recharge, Aquifer media, Soil media, Topography, Impact of Vadose Zone and Hydraulic Conductivity.

前言：介绍了DR AST IC模型的七个评价因子：地下水埋深、含水层净补给量、含水层介质类型、土壤类型、地形坡度、包气带介质i的影响和含水层的导水系数。

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If you can't pay your regular bills, it's time to move to a smaller house, drive an older model car, or make drastic cuts until your outgo matches your income.

如果你不能规律性的支付账单，很么你就应该去住更小的房子，开一辆旧款的汽车，大幅消减生活开支直到入可敷出为止。

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Even more significant, in the light of Mr Mulally's new job, is the drastic change that Boeing Commercial has made to its business model with the 787.

ECONOMIST: Face value