pulse repetition frequency

例句：

1. 1.The doctor measured the patient's pulse repetition frequency to determine if he was having a heart attack.
   医生测量了患者的脉搏重复频率，以确定他是否正在经历心脏病发作。
2. 2. During the race, the athletes monitored their pulse repetition frequency to stay in top condition.
   在比赛中，运动员们监测他们的脉搏重复频率，以保持最佳状态。
3. 3. The researcher found that the pulse repetition frequency of the patient had increased significantly after the treatment.
   研究人员发现，患者在治疗之后脉搏重复频率显著增加。