PL Pulse Frequency Modulation 脉冲频率调制
pulse frequency modulation control system [自] 脉冲调频控制系统
pulse frequency modulation telemetry [自] 脉冲调频遥测术
pulse code modulation-frequency modulation 脉码调制
pulse duration modulation-frequency modulation 脉冲持续时间调制调频
pulse-width modulation-frequency modulation 脉冲持续时间调制调频
Pulse Frequency Modulation PFM 脉冲频率调制
PFM M Pulse Frequency Modulation 脉冲频率调制
Integral Pulse Frequency Modulation 结合积分脉冲频率调制 ; 整体脉冲频率调制
Modulation Domain and Pulse Analyzer(MDPA) analyzes signal using a plane domain which is consisted of frequency and time.
调制域及脉冲分析仪利用时间和频率构成的平面域对信号进行分析。
High frequency pulse width modulation power control systems can be realized using semiconductor switches.
高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
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