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The testing results demonstrated that the phreatic water quality was of evident zoning characteristics in spatial distribution.
测试结果表明：苏锡常地区潜水水质在空间分布上具有较为明显的分带性。
Activities such as mutual interference between the district, zoning to set a more reasonable size, spatial blurring.
如各分区间活动相互干扰、分区的面积设置较不合理、空间界限模糊等。
Zoning effect in spatial data mining and its application in coal mine;
近年来，空间数据挖掘系统的开发及应用已取得了极大的进展。
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