磁场环境受磁场源干扰的影响有增无减，而这些干扰可能影响腕表的功能，无论是机械机芯还是帝舵石英机芯都无法避免。

Increasing the effect of magnetic field by magnetic field interference, and the interference may affect the function of the watch, whether mechanical movement or quartz movement can not be avoided.

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磁力梯度张量表示的是磁场矢量三个分量的空间变化率，能够很好地用于偶极子场源的定位跟踪。

Magnetic gradient tensor is that the three components of the magnetic field vector space rate of change, is able to do well for the dipole localization and tracking.

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大地电磁测深法(MT)是以天然电磁场为场源研究地球内部电性结构的一种重要的地球物理手段。

Magnetotelluric (MT) sounding is an important geophysical means to study the Earth electrical structure using the natural EM field as its source.

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