surface electrocardiogram meaning in English

体表心电图

The body surface electrocardiogram ( ecg ) is an important cardiac diagnostic tool . but because the relationship between the body surface ecg and the work state of heart can not be understood completely , there is much limitation when the ecg is used for clinical diagnosis
体表心电图是临床诊断、治疗的重要工具,但是,由于人们不能全面了解体表心电信息与心脏工作状态之间的对应关系,使得心电图在心脏疾病的临床诊断中受到很大的限制。