VLF
英
美
abbr. 可变场长度；可变段长度；可变组长度; 升力换向式飞行(Vectored Lift Flight); 垂直发射设备(Vertical Launch Facility)
双语例句
- 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。 - Research Progress of ELF/ VLF Radiation Generation from Ionosphere Modulated by Powerful HF Waves
高频电磁波调制电离层产生ELF/VLF辐射的研究进展 - Applied research of convolutional code and turbo code in VLF communication system
卷积码和Turb0码在甚低频通信系统中的应用研究 - Computation of VLF electromagnetic anomalies by BEM in complex condition
用边界元法求解复杂条件下甚低频法电磁异常 - A long range link, established with the high power Very Low Frequency ( VLF) system, resists atmospheric nuclear effects and is very difficult to jam.
用高功率甚低频系统建成的一条远距离链路，可抵抗大气核爆炸效应，且敌人很难干扰。 - Research of the Electric Effect for iron tower on VLF T-type Antenna
铁塔对T形面型天线电气性能影响的研究 - Influences of solar flare bursts and partical precipitation on the lower ionosphere have been observed by means of VLF propagation effects at Zhongshan Station in Antarctica.
在南极中山站利用甚低频传播手段观测太阳耀斑爆发及极区粒子沉降对低电离层的影响。 - This paper calculates VLF field strength using the waveguide mode theory based on earth-ionosphere waveguide propagation model.
基于地球-电离层波导的传播模型，运用波导模式理论对甚低频电波的场强进行计算。 - VLF Field Strength Calculation Methods Based on Waveguide Mode CAD of Low-Noise Microwave FET Amplifier
基于波导模式的甚低频场强计算方法低噪声微波场效应管放大器的计算机辅助设计 - VLF/ LF radio sounding of ionospheric perturbations associated with earthquakes
与地震有关的电离层扰动的甚低频/低频无线电探测 - Virtual Boundary Element Method for Solving Elastic Problems of Orthotropic Bodies with Different Materials COMPUTATION OF VLF ELECTROMAGNETIC ANOMALIES BY BEM IN COMPLEX CONDITION
正交各向异性不同材料组合体的虚边界元解法用边界元法求解复杂条件下甚低频法电磁异常 - INS Output Revising Based on Differential VLF Position
基于差分甚低频定位信息的惯导输出校正 - Research on VLF Propagation Based on the Prediction of Environment Parameters
基于环境参数预测的VLF传播效应研究 - Research of Weak VLF Signal Detection Based on Duffing Oscillators
基于Duffing振子的微弱极低频信号检测研究 - KEYWORDS: GIMS, ion source, anode layer, sputtering, TiN, ion plating, medium frequency, pulsed DC. Influences of solar flare bursts and partical precipitation on the lower ionosphere have been observed by means of VLF propagation effects at Zhongshan Station in Antarctica.
中文关键词：气离溅射、子源、极层流、射、化钛、子镀膜、频、冲直流。在南极中山站利用甚低频传播手段观测太阳耀斑爆发及极区粒子沉降对低电离层的影响。 - 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。 - Ionosphere VLF electric field anomalies before Wenchuan M 8 earthquake
汶川8级地震前空间电离层VLF电场异常现象 - Marine integrated navigation system Ship Integrated Navigation Information Fusion Based on VLF and Simulation
船舶综合导航系统船舶组合导航系统基于阿尔法系统的舰船综合导航信息融合方法与仿真 - The main spectral components are distinguished in the heart rate variability spectrum: ultra low frequency ( ULF), very low frequency ( VLF), low frequency ( LF), high frequency ( HF) components.
心率变异性长时程功率谱主要成份分为超低频、极低频、低频、高频。 - Research of VLF single transient radiate field determination system
VLF单次瞬变辐射场强测定系统的研究 - The attenuation on the sea is computed using electromagnetic calculation method and the attenuation of propagation is analyzed on the complicated boundary conditions.
使用时域电磁场数值计算方法计算白天全海水传播路径电波传播的衰减，分析复杂边界条件中VLF电波传播损耗，并对波导边界变化对VLF传播特性的影响作了讨论。 - Results HF is significantly correlated negatively with VLF and LF.
结果①VLF和LF与HF均呈显著负相关； - Measurement and Comparison of VHF/ VLF Radiations of Preliminary Breakdown of Cloud-to-Ground and Intracloud Flashes
地闪和云闪初始击穿VHF/VLF辐射特征观测和比较 - Effects of the atmospheric planetary waves on radio wave propagation at LF and VLF
大气行星波对LF和VLF无线电波传播的影响 - The Influence of Channel Geometry on VLF/ VHF Radiations from Lightning Return Strokes
地闪回击通道几何结构对VLF/VHF辐射场特征的影响 - Based on classical model of atmospheric noise characteristic parameter, a simulation model of VLF/ LF FSK receiver is established in an atmospheric noise environment.
基于大气噪声特征参数经典模型，建立了一个大气噪声环境中的VLF/LFFSK接收机性能分析的仿真模型。 - The correlation coefficient ( r) of HF with VLF was significantly greater than that with LF.
VLF与HF的相关系数值（r）显著大于LF与HF的相关系数值。 - 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。 - There are no especial advantage and distinctness by using the modern spectrum analysis method or FFT to study balance the specific value VLF/ HF between the healthy individuals and hyperthyroid.
对比现代谱分析法和FFT分析法，在正常人和甲亢患者VLF/HF比值对比研究中，现代谱分析法并无明显的不同和优势。 - VLF communication is a stable submarine communication means at long distance.
VLF通信是远距离、稳定的对潜通信方式。