Operational And Administrative System For Import Support进口支持的运作和管理系统 On-line Automotive Service Information System在线汽车服务资讯系统 Open Artwork System Interchange Standard打开艺术品系统交换标准 Online Automated Supplier Information System自动化供应商信息系统在线 On-line Asperger Syndrome Information and Support在线埃斯伯格综合症的信息和支持 Oceanographic and Atmospheric Support and Information System海洋和大气的支持与信息系统 Open Document Format for Office Applications办公应用程序开放文档格式 Oceanic and Atmospheric Scientific Information Center海洋和大气科学信息中心 Ordnance Alteration Status Information System军械变更状态信息系统 Over-the-Horizon Airborne Sensor Information System航空传感器信息系统实施超视距 Operational Area Satellite Information System业务范围卫星信息系统 Organization for the Advancement of Structured Information Systems (formerly SGML Open)组织的结构化信息系统(原名SGML开启) Online Archival Search Information System (Harvard University)网上档案搜索信息系统(哈佛大学) Advancing Open Standards for the Information Society开放标准,推进信息社会 Obstetric Anesthesia Safety Improvement Study产科麻醉安全性改进学习