1.
ringdown signaling
低频监察信号 -用低频电流传送监察信号
2.
Resrach of Apple Impedance Monitoring System under Low Frequncy Current-Source;
低频电流激励下苹果电阻抗检测系统的研究
3.
Effects of low frequency currents on Rheum tanguticum Maxim seeds germination and activities
低频电流对唐古特大黄种子萌发及活力的影响
4.
The Electromagnetic Characteristic Study of Brain Impedance under a Low Frequency Current-Source;
低频电流激励下脑电阻抗的电磁特性及应用研究
5.
low frequency AC coded track circuit
低频交流电码轨道电路
6.
CMOS Current-Mode Radio Frequency Low Noise Amplifier
CMOS电流模式射频低噪声放大器
7.
Research and Implementation on Low-frequency Sine Wave Current Source for Testing
测试用低频正弦电流源的研究与制作
8.
Study on High Intensity Discharge Lamp Electronic Ballasts with Low-Frequency Square-Wave
低频方波高强度气体放电灯电子镇流器研究
9.
Applications： Low Voltage, High Frequency Inverters, and Polarity Protection Applications.
主要用途：低电压整流，高频转换开关和极性保护。
10.
Research on Low-frequency Square-wave Electronic Ballast for HID Lamp;
低频方波HID灯电子镇流器关键技术研究
11.
Research on Low-frequency Sine Waveform Exciting Mode for Electromagnetic Flowmeter;
电磁流量计低频正弦波励磁方法的研究
12.
Research on Low-frequency Three-value Trapezoidal Waveform Exciting Mode for Electromagnetic Flowmeter;
电磁流量计低频三值梯形波励磁方法的研究
13.
Coordinated Stabilized Control of Low-Frequency Oscillation of AC/DC Hybrid Power System;
交直流混合电力系统低频振荡协调稳定控制
14.
Low-frequency high-precision PLL based on optical current transducer
基于光学电流互感器的低频高精度锁相环
15.
Continuous Current Circuit Applied to Improving Low Frequency Characteristic of Stepping Motor
改善步进电机低频特性的续流回路方法
16.
The influence of tie-line power flow on low-frequency mode in interconnected power system
联络线潮流对互联电网低频振荡模式的影响
17.
Simulation Study on Low Frequency Power Swing Suppressing with HVDC Transmission
高压直流输电对低频振荡抑制作用的仿真研究
18.
At low frequencies, the DC resistance of a given conductor is essentially the same as its AC resistance.
在低频情况下，给定的导体的直流电阻实际上与其交流电阻一样。