双感应测井在油田现场应用非常普遍，其数据反演属于非均匀介质中电磁波逆散射问题范畴。
Inversion of dual induction logging measurements belongs to the category of electromagnetic inverse scattering in nonhomogeneous media.
远场涡流缺陷重构属于电磁逆问题范畴。
Defect reconstruction of remote field eddy current belonged to electromagnetic inverse problem.
第二部分探讨了其内丹思想的理论基础，重点分析了“先天真一之气”范畴和其内丹学说中的顺逆之道；
The second chapter discusses the theoretical foundation of his inner alchemy theory, and places emphasis on analysising of the conception of the real whole energy.
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