Publishing Sector Industry Group (Universal Postal Union)出版部门工业集团(万国邮政联盟) Programming Special Interest Group编程的特殊兴趣小组 Provisional Institutions of Self-Government (Kosovo)科索沃自治机构(临时) Pelotons de Surveillance et d'Intervention de la GendarmeriePelotons监控等'Intervention·d·德·拉·新政 Platform Special Interest Group平台的特殊兴趣小组 Pediatric Student Interest Group儿童学生兴趣小组 Pipeline Simulation Interest Group管道模拟利益集团 Pounds Per Square Inch, Gauge磅/平方英寸,表 Pomeranian Special Interest GroupPomeranian特殊利益集团 Pounds per Square Inch Gauge磅/平方英寸计