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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Microsoft Word - 胡寒冬_new_.doc 关键词: 呼吸暂停 ; 低通气 ; 血氧饱和度 ; 脉率 [gap=1333]Keywords: apnea; hypopnea; oxygen saturation; pulse frequency
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... pulse duration 脉冲持续时间 pulse frequency 脉冲频率；脉率；脉搏率；脉冲重复频率 optical pulse 光脉冲，光学脉冲 ...
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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 method [电子] 脉冲频率法
output pulse frequency 输出脉冲频率
pulse frequency discriminator 脉冲鉴频器
pulse frequency modulation telemetry [自] 脉冲调频遥测术
gas pulse frequency 燃气脉冲频率
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
However, LH pulse frequency and LH pulse amplitude were unaffected by treatments.
但LH的脉冲频率和幅度不受上述处理的影响。
Sampling point number of every pulse cycle, instantaneous pulse frequency and period was gained with program operation.
经程序运算得到每个脉冲周期的采样点数，瞬时脉冲频率和周期。
The results show that the deposit rate, composition and properties of coating change with the variation of duty ratio and pulse frequency.
结果表明，镀层的沉积速率、镀层成分及镀层的性能都随脉冲频率和占空比的变化而变化；
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