The paper discusses the problem of land expansion in the urbanization, analyzes the reason, proposes some policy advice about the economical and intensive use of land.

本文探讨了在我国城市化进程中由于城市土地扩张而出现的一些问题，分析了其产生的各种原因，并从土地利用的节约、集约等方面提出了一些政策建议。

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This thesis, based on the achievement in the evaluation of land at home and abroad, makes clear the definition of the economical and intensive utilization of construction land.

本文在参考国内外土地评价研究成果的基础上，对建设用地的节约集约利用的概念进行了明确的界定。

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Petroleum exploration and development call for not only the intensive study and prediction of ground stresses but also simple, economical and practical approximate methods.

在油气的勘探与开发过程中既需要精细的地应力研究与预测，也需要简单易行、经济实用的近似方法。

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