...丛式井技术 工程技术集成 [gap=2391]Keywords] Barnett shale gas；technique of horizontal well；technique of cluster well；integration of engineering techniques ..
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The result of cluster analysis(the Single method) indicates that the RAPD technique can distinguish the relationship between species well.
结果表明，利用RAPD技术可以很好地区分种间关系。
Cluster analysis is an important data-mining technique, as well as an important step of data-mining.
聚类分析既是一种重要的数据挖掘技术，又是数据挖掘的一个重要步骤。
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