1.
ringdown signaling
低频监察信号 -用低频电流传送监察信号
2.
photoaudio generator
低频光电信号发生器
3.
high precision LF signal generator
高精度低频信号发生器
4.
Real-time monitoring system of BPC based on virtual instrument
基于虚拟仪器的低频时码发播信号实时监测系统
5.
The Research on Applying Virtual Instrument Technology to Measure and Monitor Low-frequency Time-codes Time Service Signal;
虚拟仪器技术在低频时码授时信号测量与监测中的应用研究
6.
Instantaneous frequency estimation of frequency modulation signals in low signal noise ratio
低信噪比情况下调频信号的瞬时频率估计
7.
Real-time Signal Spectrum Monitoring System Based on DSP and Ethernet Network
基于DSP和Ethernet的实时信号频谱监测系统
8.
General purpose specification of low frequency signal generators
GB/T12181-1990低频信号发生器通用技术条件
9.
Digital Signal Generator of Low Frequency with Phase Shift
低频数字式移相信号发生器的设计
10.
Test methods for general purpose low frequency signal generators
GB/T12180-1990低频信号发生器通用测试方法
11.
CTCSS does not alleviate RF interference.
CTCSS并不会降低无线电射频信号的干涉。
12.
A Design of CMOS Amplifier used in low frequency small signal testing;
基于低频小信号检测的 CMOS 放大器设计
13.
Zero-error Low Frequency Three-phase Phase Shift Signal Generator
零误差低频程控三相相移信号发生器
14.
Medium and low frequency underwater acoustic signals detecting with laser interferometry
中低频水下声信号的激光干涉法探测
15.
Design of an intermediate-power and lower-frequency supply
基于DDS的中功率低频信号源的设计
16.
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
17.
The lower the tone frequency the less audible it tends to be.
当然，这些音频信号的频率越低，越难被听到。
18.
Research and Realization of a Method to Measure Frequency for High Frequency Signal Dependent on Low Sample Rate
低采样率下高频信号的测频方法的研究与实现