1. Synchronous apexcardiogram and echocardiogram were also studied in 25 normal persons and 3 cases of rheumatic heart disease.
还对25名正常人和3例风湿性心脏病患者进行了同步心尖和超声心动图检查。

来自互联网

2. Synchronous apexcardiogram and echocardiogram were also studied in 25 normal persons and 3 cases of rheumatic heart disease.
还对25名正常人和3例风湿性心脏病患者进行了同步心尖和超声心动图检查。

来自互联网