分析甚低频电磁波传播路径与方式，给出场强的计算公式。
By analyzing transmission pathway and mode of VLF radio wave, calculation formula of field intensity is given.
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。
The zero magnetic field experiment shows that the ULF received by instrument comes from the emission of underground object.
利用两种能够引导甚低频电磁波的导管模式，求得哨声导管中磁场和电流的分布。
By using two kinds of model of ducts in which the VLF electromagnetic waves are guided, we obtain the distributions of magnetic field and current in the whistler duets.
分析了低频电磁波在均匀介质中的磁场分布，其分布与介质的介电常数、磁导率密切相关。
Magnetic field distribution of low frequency electromagnetic wave in even medium is analyzed, which is related to the medium's dielectric coefficient and magnetic inductive capacity.
研制出一种新型的低频电磁波磁屏蔽材料，通过理论分析和试验，证明其低频电磁波磁屏蔽性能。
A new type of material of magnetic shielding coating in low frequency is made out. Through analysis of theory and tests, the ability of shielding in low frequency of the material is proved.
研究信息融合技术在海底管道维修装置与检测装置间的应用，采用超低频电磁波，小波分析等技术与管线跟踪探测仪、DGPS以及示踪信号探测器等设备解决发射、接收、通讯技术中的关键技术点。
The extra low electromagnetic wave, wavelet technology, pipe track instrument, DGPS and tracing signal equipment are used to solve the key question of trans-mit-receive and communication.
超低频 （SLF）电磁波技术利用地球物理和无线电物理相结合的原理 ，由人工产生大功率电磁波信号。
The technique of electromagnetic waves in SLF (Super Low Frequency) frequency band can be investigated in the light of geophysical theory combined with radio-physical theory.
超低频 （SLF）电磁波技术利用地球物理和无线电物理相结合的原理 ，由人工产生大功率电磁波信号。
The technique of electromagnetic waves in SLF (Super Low Frequency) frequency band can be investigated in the light of geophysical theory combined with radio-physical theory.
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