Proposed for Advanced Development提出了先进的发展 Product Application Document产品应用程序文件 Product Assembly Document (automotive)产品装配文件(汽车) Path-Average DispersionPath-Average色散 Percent Average Deviation平均偏差百分之 Project Appraisal Document项目评估文件 Partially Air Dried (lumber)部分风干(木材) Passenger Available for Disembarkation (aviation)乘客可登陆(航空) Power Azimuth Distribution电力方位分布 Poem A Day (classroom)诗(每天教室) Portable Application Description便携应用的描述 Personal Access Device私人访问设备 Picture A Day图片 Pressure Anomaly Detection压力异常检测 Public Affairs Detachment (US Army)公共事务支队(美国陆军)