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In the time domain , the self-potential anomaly emerged first and ULF magnetic field changes arose then .

在时间序列上先出现自电位异常，然后是超低频磁场的变化；

Introducing the basic principle of ULF function occurrence machine and the familiar failure of electric circuit and the main methods of repair .

本文介绍了超低频函数发生器的基本原理，以及电路的常见故障和检修方法。

Application of ULF Geological Remote Sensing Device in Gas Detection

超低频地质遥感探测装置在瓦斯气探测中的应用

Study on optimizing technique for transfer function of the ULF absolute vibration sensor

超低频绝对振动传感器传递函数优化技术研究

ULF electromagnetic radiation observation and data process methods

超低频（ULF）电磁辐射观测与资料处理方法

Design and Analysis Of ULF Vibration Sensor

超低频振动传感器的设计与分析

The record principle and anomaly features of ULF electromagnetic disturbance

地震ULF电磁扰动接收原理及异常特征

The record principle and anomaly features of ULF electromagnetic approach are described in this paper .

本文主要介绍探测ULF电磁扰动方法的接收原理和异常特征。

The Failure Repair of ULF Function Occurrence Machine

超低频函数发生器的故障及检修

An Artificial ULF / ELF Electromagnetic Source Used in Geophysical Prospecting

一种用于地球物理探测的人工超低频/极低频电磁场源

Effects of Electric Conductivities on the Propagation of ULF MHD Wave

超低频磁流波传播中电导率效应的研究

Characteristics of anomalous subsurface vertical electric changes in VLF and ULF bands

地下垂直电场在VLF和ULF频段内的异常变化特征

Estimation of the Diagnostic Values and Limits of Lumbar Disc Disease with ULF & MRI

超低场MRI诊断腰椎间盘病变的价值与限度

The paper introduces the precise measuring circuit of ultra-low frequency voltage based on the characteristics of the measurement of ULF .

根据超低频电压信号测量的特点，给出了一种精密测量电路。

Numerical simulation of magnetospheric ULF waves excited by positive and negative impulses of solar wind dynamic pressure

太阳风正负动压脉冲激发磁层ULF波的数值模拟

The Diagnostic Evaluation of The Nerve Sheath Cell Tumors with ULF & MRI ( In 79 Cases )

神经鞘细胞肿瘤的超低场MRI诊断价值（附79例分析）

This research offers the technical scheme of detecting ULF Absolute Vibratory signal by the normal electromagnetism rate transducer .

本研究提出了一种利用普通的电磁式速度传感器检测超低频绝对振动信号的技术方案。

Hygienical Survey of Ship ULF Magnetic Field

船用超低频磁场的卫生学调查

Precursory Electric and Magnetic Signals at ULF and LF Bands during the Fracture of Rocks under Pressure

岩石受压破裂的ULF和LF电磁前兆信号

Thereafter , to use ULF geological remote sensing device on ground surface can block out gas concentration range and predict its extent .

据此，在地面使用超低频地质遥感探测仪，即可探测出地下瓦斯气的富集范围，预测其富集程度。

Evaluation by running window smoothing is used for the digital pro-cessing of the polarization of geophysical ULF signals .

信号的偏振状态可以用来研究信号的物理属性和传播介质特性。本文利用滑动窗平滑估值方法，将输入两正交信号分量作为线性基上的复信号进行数字处理，求取偏振参量；

Test shows that this research can solve the problem of which the normal electromagnetism rate transducer can not inspect the ULF absolute vibratory .

实验表明，本研究方案较好的解决了普通电磁式速度传感器不能检测超低频绝对振动问题。

Mr Perczel came up with the idea under the guidance of Professor Ulf Leonhardt .

派采尔正是在里奥哈茨教授的指导下提出了他的构想。

In turn , these ULF waves were found to effectively accelerate the seed electrons provided by the first step , to become killer electrons .

结果是，人们发现ULF波在第一步有效加速了种子电子，使其变为致命的电子。

Project Coordinator ULF petzschmann examines Neolithic and Bronze Age ceramic vessels found in the7000-year-old dwelling mound site .

考古学家在检查从遗址中发现的新石器和铜器时代的瓷器。

Dr. Ulf Henning Richter is a business strategist based in China , he says both sides do recognize how important they are to one another .

在中国工作的商业策略师乌尔夫·亨宁·里克特博士表示，双方确实认识到了彼此之间的重要性。

Bronn managed to keep Shagga from chopping off the dead man 's cock , which was fortunate , but even still Ulf is demanding blood money ,

波隆好不容易才阻止夏嘎剁掉那死人的老二，算是不幸中的大幸，即便如此乌尔夫还坚决要求赔偿血债，

Precursory magnetic and electric signals at ULF and LF bands were observed in an experiment for 18 samples of 4 types of rocks during whole fracturing process under uniaxial pressure .

实验观测到了4类岩性、18块样品在单轴压力下直至破裂发生全过程中的ULF和LF电磁前兆信号。

The dispersion relations of ULF / ELF waves in ionospheric Alfv é n resonator under different ionospheric conditions is discussed by establishing appropriate level-layered ionosphere model .

文章通过建立平面分层的电离层模型，对ULFELF波在IAR中传播模式进行研究，得到描述ULFELF波在IAR不同电离层状态下传播满足的色散关系。

This paper analyses and estimates some characters of the observed fields theoretically , according as the electromagnetic radiation signals received by Super Low Frequency ( ULF ) scopes in Dujiangyan City before the earthquakes occurred .

本文通过都江堰电磁波ULF超低频观测仪震前接收到的电磁辐射信号，对观测场量的某些特征进行理论分析和估算。