Cardiograph

[kɑ:diәgrɑ:f]

解释:

(noun.) medical instrument that records electric currents associated with contractions of the heart.

桃瑞丝整理--From WordNet

解释:

(n.) An instrument which, when placed in contact with the chest, will register graphically the comparative duration and intensity of the heart's movements.

手打:旺达