APSD(Automatic Power Save Delivery) WiFi联盟的WMM省电认证协议，能够加长Wi-Fi设备的电池寿命。
Objective: to study the diagnosis and operation of aortopulmonary septal defect (APSD).
目的：探讨主动脉—肺动脉间隔缺损的诊断与外科治疗。
A case of aorticopulmonary septal defect(APSD) associated with ventricular septal defect is reported.
本文报告一主、肺动脉间隔缺损病例。
Objective to analyze the accuracy of the diagnosis of aortopulmonary septal defect (APSD) by Doppler echocardiography and improve the initial echocardiographic diagnosis.
目的分析多普勒超声心动图诊断主肺动脉间隔缺损的准确率，提高超声心动图检查对主肺动脉间隔缺损的首次检出率。
应用推荐