西安工程学院学报010107 关键词： 边界条件; 潜水面; 直角坐标系; 渗流理论 [gap=947]Keywords ：boundary conditions；phreatic surface；rectangular coordinates system；seepage theory
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New coordinate systems are not rectangular coordinates system and new connections and regularities of nuclear system distribution are found.
这里新坐标系不是直角系，能发现核素系统分布的新联系与规律。
As engineering activities related to groundwater are getting more and more complicated, seepage problems in arbitrary rectangular coordinates system can be often met.
随着与地下水有关的工程活动的逐步复杂化，任意直角坐标系下潜水渗流问题日渐多见。
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