electronic pulse counter

例句：

1. 1.The electronic pulse counter is used to measure the heart rate of patients.
   电子脉冲计数器用于测量病人的心率。
2. 2. The electronic pulse counter was invented by a scientist who wanted to improve medical equipment.
   电子脉冲计数器是由一位科学家发明的，他想改进医疗设备。
3. 3.The electronic pulse counter can detect irregular heartbeats and alert the doctor.
   电子脉冲计数器可以检测不规则心跳并提醒医生。