The zero magnetic field experiment shows that the ULF received by instrument comes from the emission of underground object.

零磁场实验表明传感器在地面接收的超低频电磁波来自地下地层等地质体的辐射。

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A criterion of zero magnetic field point, which is related with the symmetry of current-carrying system, is derived from a simple problem.

从一个简单问题出发，引出关于磁场零值点的一个判据，该判据与载流系统的几何对称性有关。

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Properties of tunneling transmission in magnetic quantum structures have been analysed based on Schr dinger equation both in zero electric field and in sinusoidal one.

研究了零电场和正弦电场作用下的磁量子结构中自旋电子的隧穿输运特性。

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