Pearl River Delta珠江三角洲 Pesticides Regulation Division(美国)农药管理局 pro-rata distribution按比例分配 Product Research and Development产品研究与开发 Piezoelectric Radiation Detector热电辐射控测器 Periodn. 学时, 课时; 一段时间, 时期, 周期; 句号 Polytechnical Research and Development综合性技术研究与开发 Project Requirements Directive项目的要求 Parti de la RÉforme et du DÉveloppement (French: Reform and Development Party, Morocco)Parti de la RÉforme et du DÉveloppement (French: Reform and Development Party, Morocco) Partido de la RevoluciÓn DemocrÁtica (Party of the Democratic Revolution)Partido de la RevoluciÓn DemocrÁtica (Party of the Democratic Revolution) Physical Region Descriptor物理区域的描述符 Performance Review Description绩效评估的描述 Physical Review D (American Physical Society journal of particles, fields, gravitation, & cosmology)《物理评论》杂志(美国物理学会单粒子,场地,引力,宇宙论) Democratic Renovation Party (Cape Verde)民主党改造党(佛得角) Personal Radiation Device个人的辐射装置