1.
paired high and low frequency telecommunication cable
对称型高低频电信电缆
2.
airborne proton magnetometer
航空甚低频电磁系统
3.
ringdown signaling
低频监察信号 -用低频电流传送监察信号
4.
APPLICATION OF ZOOM FFT TECHNIQUE TO DETECTING EM SIGNAL OF SLF/ELF
频率细化技术在超低频/极低频电磁信号检测中的应用
5.
The theory of low frequency power supply and the characteristics of lowfrequency power source generator are introduced.
介绍了低频供电的原理及低频电源发生器的特点。
6.
EFFECT OF EARTH RESISTIVITY ON ELF/SLF TRANSMISSION TECHNIQUE
大地电阻率在超低频/极低频电波传播技术中的作用
7.
low frequency AC coded track circuit
低频交流电码轨道电路
8.
photoaudio generator
低频光电信号发生器
9.
low frequency radio-range
低频无线电导航信标
10.
lowmedium frequency radio range
低中频无线电导航信标
11.
electromechanical low-frequency control oscillator
机电低频控制振荡器
12.
LOR (Low-frequency Omnidirectional Radio Range)
低频全向无线电信标
13.
four-course low-frequency radio range
四航道低频无线电信标
14.
Frequency Response to Super-weight Low-pitcked Circuit in Frequency Supplement;
频率补偿式超重低音电路的频率响应
15.
Discussion on the Shield Power Cable’s Ultra Low Frequency Test Method
浅谈屏蔽电力电缆的超低频测试方法
16.
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
17.
Study of Power System Frequency Measurement and Under Frequency Load Shedding Scheme;
电力系统频率测量及低频减载方案的研究
18.
Study on Dynamic Frequency Characteristics and Coordinative Under-Frequency Load Shedding Scheme for Nationwide Interconnected Power Grid of China
全国电网互联系统频率特性及低频减载方案