在介绍了交变磁场测量原理的基础上，分析并给出了交变磁场测量法的数学和理论模型，对缺陷模型进行了详尽的分析。
On the introduce of alternative current field measurement (ACFM), the mathematic and theoretical model of ACFM were analyzed, and especially the flaw model at large.
根据交变磁场测量法(ACFM)的基本原理，设计了一种由激励线圈和感应线圈组成的交变磁场传感器，可对空间“点”磁场进行测量。
According to the basic principle of alternative current field measurement (ACFM), the alternative current field sensor was designed, which was made up of drive coil and induction coil.
本智能磁场测量系统既适合测量直流磁场，又可测量交变磁场，且体积小，性能高，适用频率范围宽。
It can not only measure DC current magnetic field but also alternative current magnetic field. This system has small volume, high capability, and wide frequency range.
本智能磁场测量系统既适合测量直流磁场，又可测量交变磁场，且体积小，性能高，适用频率范围宽。
It can not only measure DC current magnetic field but also alternative current magnetic field. This system has small volume, high capability, and wide frequency range.
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