An evolution algorithm is designed for solving the partial ordering relation, by which an ideal method is obtained for calculation.

建立了钻井布局问题的数学模型，设计了基于偏序关系求解钻井布局问题的演化算法，得到了理想的计算结果。

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The method is of simple calculation, high resolving power. It ordering results is accord with the actual environmental quality.

实例分析表明该方法计算过程简便、分辨率高。排序结果与实际环境质量状况相符合。

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The Breakthrough Institute, by contrast, argues for ordering things according to a calculation of the needs of human welfare, rather than just aping what has happened in the past.

ECONOMIST: The global environment