Public Affairs Department公共事务处 Project Approval Document规划批准文件 Pixel Array Detector像素阵列检测器 Pulse Amplifier Discriminator脉冲放大鉴别 Property Assessment Department房地产评估部门 Pipe Acquisition Disorder (alt.smokers.pipes)管采集障碍(alt.smokers.pipes) Pädogogischer Austauschdienst (German foreign exchange service)Pädogogischer Austauschdienst (German foreign exchange service) 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)