pulse interval

例句：

1. 1. The doctor measured the patient's pulse interval to determine if he was having a heart attack.
   医生测量了患者的脉搏间隔，以确定他是否正在经历心脏病发作。
2. 2. During exercise, the person's pulse interval can vary significantly due to changes in heart rate.
   在运动期间，由于心率的变化，这个人的脉搏间隔会显著变化。
3. 3.The nurse monitored the patient's pulse interval and noted any significant deviations from normal values.
   护士监测了患者的脉搏间隔，并注意到任何与正常值显著偏离的情况。