Institute for Applied Optics and Precision Engineering应用光学和精密工程 Infrared Optical Film红外光学薄膜 Interactive Output Facility交互式输出设备 Investment Opportunity Facility投资机会 International Oceanographic Foundation国际海洋的基础 International Orienteering Federation国际定向越野赛联合会 Independent Order of Foresters独立的森林 Imposto Sobre Operacoes Financeiras (Brazil)Imposto Operacoes北极Financeiras(巴西) International Olympic Federations国际奥林匹克组织 International Operation Forces (gaming clan)国际化经营家族势力(游戏) Intelligence and Operations Facility (digital command post)智能和操作设备(数字指挥所) International Order of Foresters国际秩序的森林 Inspection Observation Finding检查观察结果 Inter Office Facilities国米的办公设备 International Osprey Foundation国际Osprey基础