The values of analytical continuation at different depths from the potential field downward constitute the continuation field, on which the principal component analysis is made.

位场向下在不同深度上解析延拓的值构成延拓场，可对延拓场进行主成份分析。

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In the analytical continuation data processing of gravity and magnetic field, the important practical problem is the automatic reading decision for template access and its implementation on computers.

在重磁场解析延拓资料处理中，量板取数自动判读及计算机实现是个重要的实际问题。

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