变频率电流
fluctuant frequency current
标﹝准﹞频﹝率﹞电台
standard frequency station
标准频率电台
standard frequency station
低频电针
low frequency Electra acupuncture
低频率电疗法
low frequency current therapy
电压－频率－电压
voltage-frequency-voltage
多频率电阻抗断层成像
multi-frequency electrical impedance tomography
高频率电动发电机
high frequency motor generator
高频率电阻
high frequency resistance
公共安全无线电频率
public safety radio frequency
固定开关频率PWM电流控制
PWM current control with fixed switching frequency
国际无线电频率委员会
international radio frequency board
恒定电压恒定频率电源
constant voltage and constant frequency power