脉冲分周期脉冲与非周期脉冲，周期脉冲每秒出现的次数为频率，而一个脉冲的持续时间就是脉冲宽度。 脉冲频率即为单位时间内在放电间隙上发生有效放电次数.
对于射频脉冲模式，主要有两个参数，一个是脉冲频率（pulse frequency），即射频源每秒开关的次数；另一个是占空比(duty cycle)，即脉冲开启的时间占整个脉冲周期的比例。如图1所示： 图1.
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脉冲频率调制 PL Pulse Frequency Modulation ; PFM ; pulse-freqnecy modulation ; modulation, pulse frequency
脉冲频率灯 pulse frequency modulation ; pfm ; pulse frequency modulation,pulse frequency modulation
脉冲频率法 [电子] pulse frequency method
积分脉冲频率调制 IPFM
脉冲频率分集 pulse frequency diversity
输出脉冲频率 output pulse frequency
测量脉冲频率 fulse width ; frequency
电流脉冲频率 Hz
The current density pulse frequency and form affects the wearing action of MAO coating. Decreasing the current density can improve the coating’ s wearing capability.
电流密度、脉冲频率和波形对膜层磨损行为有影响。
参考来源 - 微弧氧化技术替代电镀硬铬应用研究·2,447,543篇论文数据，部分数据来源于NoteExpress
但LH的脉冲频率和幅度不受上述处理的影响。
However, LH pulse frequency and LH pulse amplitude were unaffected by treatments.
试验研究了不同微弧氧化电压和脉冲频率对涂层微观形貌，涂层厚度及相组成的影响。
The effects of different oxidation voltage and pulsed frequency on microstructure, thickness and phase constitute of the coatings have been investigated.
作为另一个示例，选择信号的逻辑状态可响应于提供给脉冲频率检测器的电源电压的变化而改变。
As another example, the logic state of the select signal can be changed in response to a change in the power supply voltage provided to the phase frequency detector.
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