electrocardiograph

例句：

1. 1.He was diagnosed with a heart condition that required regular monitoring with an electrocardiograph.
   他被诊断出患有需要定期使用心电图机监测的心脏病。
2. 2. The doctor used the electrocardiograph to monitor his patient's heart rhythm during the surgery.
   医生使用心电图机监测患者手术期间的心脏节律。
3. 3. The patient's heart rate and rhythm were monitored by the electrocardiograph throughout the procedure.
   在整个手术过程中，患者的心率和节律都通过心电图机进行监测。