Parents In Room (chat)父母在房间(聊天) Public Interest Registry域名注册组织 Pacific Islands Regiment太平洋岛群,太平洋岛编制 Protein Information Resource蛋白质序列数据库资源 Permanent Impairment Rate (worker's compensation)永久性损伤率(工伤补偿) Program Information Report项目信息的报告 Purchase Information Record采购信息记录 Partners in Injury Reduction (Alberta, Canada)合作伙伴在受伤(加拿大阿尔伯塔省) Project Implementation Review (systems development methodology)项目回顾(系统开发方法实现) Priority Intelligence Requirements优先智能要求 Passive Infra Red电红外传感器 Post-Implementation Review工作回顾 Partners in Research研究伙伴 Project Implementation Reports项目执行报告 Property Investment Research资产投资研究