The significance of VLF increase remains to be observed.
VLF升高的意义有待深入研究。
It could overcome the transmission interference, and could be the fore part of the VLF digitized receiver.
此方案可有效解决甚低频信号传输中的干扰问题，并为下一步的甚低频信号数字处理提供了基础。
By analyzing transmission pathway and mode of VLF radio wave, calculation formula of field intensity is given.
分析甚低频电磁波传播路径与方式，给出场强的计算公式。
The propagation effect of VLF wave could become a useful tool of detecting the intensity variation of cosmic rays.
所以，VLF波的传播效应可能成为间接探测宇宙线强度变化的有用工具。
The propagation characteristic of the VLF in the earth-ionosphere waveguide is analyzed by applying the FDTD method.
应用时域有限差分（FDTD）方法分析甚低频在地电离层波导中的传播特性。
The Dual Trailing Wire Antenna(DTWA) on an Aircraft antenna system is used to transmit VLF/LF messages to submarines.
机载甚低频天线系统中的双拖曳天线是用于对潜通信VLF/LF的发射天线。
This paper briefly discusses the very low frequency (VLF) electromagnetic technique and takes Shancheng gold mine for example.
简要叙述了甚低频电磁法的方法技术，并以山城金矿为例。
During the First Chinese National Antarctic Research Expedition, whistler and VLF emission observations were carried out for 37 days.
在中国首次南极考察期间，我们对哨声和VLF发射进行了37天的连续观测。
Out in the no-mans land of the international waters are the only means of communication with the submarines to use radio in the vlf or elf range.
在茫茫大洋深处，唯一可用的通信手段就是甚低频或者极低频无线电。
The VLF character for the fault zone was discussed. It is pointed that the effectiveness and limitation of searching blind fault with VLF method.
本文分析了该构造的VLF响应特点，指出在本区用VLF方法寻找隐伏构造的有效性和局限性。
The very low frequency electromagnetic method (VLF-EM) has such advantages as portable instrument, simple method, economical and high efficiency.
甚低频电磁法(VLF - EM)，具有仪器轻便、方法简单、经济高效等优点。
Hence, the integrated application of VLF-EM and EH4 conductivity image system is efficient to forecast the location of the buried ore-bodies in grasslands.
说明甚低频电磁法和EH4电磁成像系统的联合应用是草原浅层覆盖区找寻隐伏矿体的有效技术方法。
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.
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。
Abstract: the VLF Through-the-Earth Communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media.
文摘：由于大地信道稳定，低频透地通信被认为是最可靠的救急通信方式。
In the middle of the Atlantic ocean, with a salinity of 3.2 %, a VLF signal will penetrate down to a depth of 10-20 meter, barely periscope-depth for a modern large scale submarine.
在大西洋中部，海水的盐度为3.2%，甚低频无线电信号可以穿透到海面下10 ~20米的深度，几乎就是现代大型潜艇的潜望镜深度。
The signal will have attenuation and disturbance due to environmental factors in the process of VLF radio wave propagation, which will impact the reliability of submarine communication.
甚低频(VLF)电波传播过程中因环境因素影响会使信号产生衰减与扰动，导致潜艇收信可靠性下降。
The signal will have attenuation and disturbance due to environmental factors in the process of VLF radio wave propagation, which will impact the reliability of submarine communication.
甚低频(VLF)电波传播过程中因环境因素影响会使信号产生衰减与扰动，导致潜艇收信可靠性下降。
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