Project Design Document项目设计文件 Program Design Document程序设计文档 Pervasive Developmental Disorder全身性发育迟缓 Portable Digital Document可携式数字文件（MAC） Preliminary Design Document概要设计文档 Performance Driven Design性能驱动设计 Program Design Description程序设计的描述 Performance Description Document性能描述文档 Product Development Detachment产品开发 Djibouti Development Party吉布提的发展 Psychophysiological Detection of Deception (polygraph)Psychophysiological检测弄虚作假(测) Post-Decorrelative DetectorPost-Decorrelative探测器 Precision Depth Digitizer精密深度数字转换器 Program Description Document项目描述文档 Proventricular Dilatation DiseaseProventricular扩张症