Open Computing Facility打开电脑设施 Officers' Christian Fellowship军官团契 Oral Cancer Foundation口腔癌的基础 Operations Control Facility操作控制设备 Out-of-Control Flight (aviation)飞行(航空)失控 Operating Cash Flow营运现金流量 Osteopathy in the Cranial FieldOsteopathy颅领域中 OpenCard FrameworkOpenCard框架 Obsessive-Compulsive Foundation强制性基金会 Operational Check Flight操作检查航班 Overwhelming Colorfast (band)不褪色的(带)的压倒性 Operational Control Field运行控制的领域 Online Camping Friends在线露营朋友 Object Collaboration Framework对象合作框架 Ordnance Cloth Factory (Avadi, Chennai, India)军械厂(Avadi,莱布,印度)