Preservation Trades Network, Inc.保存交易网络公司 Private Telephonic Network专用电话网 Personal Telephone Number个人的电话号码 Product Termination Notice产品终止通知 PleiotrophinPleiotrophin Product Transfer Notes产品转移的笔记 Public Telephone Network公用电话网 Paint The Night油漆的夜晚 Private Telecommunications Network私人的电信网络 Private Trading Network私人贸易网络 Person to Notify个人通知 Product Technical Note产品的技术要点 Patrolman/Patrolwoman (law enforcement title)巡逻人员/ Patrolwoman(执法机构名称) Personal Telecommunications Number Service个人电信号码的服务 Photonic Transport Network (IEEE)光子传输网络(IEEE)