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首先介绍了模拟电行法，然后将其引入纯地形异常的计算。用模拟电荷法计算了几个典型的二维角域纯地形异常及一个三维３０°坡山顶的纯地形异常。
First introduced the analog electrical method, and then introduced it into pure terrain anomaly calculation. Several typical 2-D angular domain pure terrain anomalies and a pure 3-D topographic anomalies were calculated by simulated charge method.