高频探测信号
high frequency detecting signal
超低频信号
Ultra-low Frequency Signal
ultralow frequency signal
超低频信号发生器
ultra-low-frequency function generator
超低频信号源
Ultra-low Frequency Signal Source
低频信号处理
low-frequency signal processing
低频信号发生器
low frequency signal generator
low frequency generator
Low-frequency Generator
Low-frequency Signal Generator
LF signal generator
低频信号注入
low-frequency signal injection
低频信号注入法
Low frequency signal injection method
高精度低频信号发生器
high precision LF signal generator
变频信号
frequency conversion signal
variable frequency signal
frquency modulated signal
变频信号分析
signal with time-varied frequency
变频信号注入法
variable-frequency current injection
微弱频变信号
weak frequency variation signal
移频信号测试仪的设计
The Design of Frequency Shift Signal Tester