If someone has an electrocardiogram, doctors use special equipment to measure the electric currents produced by that person's heart in order to see whether it is working normally.
英漢詞典釋義
n.
心電圖
A electrocardiogram records the heartbeat.心電圖上標明心跳次數。
英英詞典釋義
Noun
1. a graphical recording of the cardiac cycle produced by an electrocardiograph