Oscillator振荡器 Optical Supervisory Channel监控信道 Ontario Securities Commission安大略证券委员会 Ohio Supercomputer Center俄亥俄州的超级计算机中心 Orlando Science Center奥兰多科学中心 Online Service Centre在线服务中心 Overseas Service Charge国外服务费 Official Supporting Committee官方支持委员会 Output State Check输出状态检查 Operational Site Certification操作网站认证 Optical SuperComputing (workshop)光学高速计算(车间) Operational Status Check (readiness test step, especially used for voting systems hardware)运行状况进行检查(准备测试步骤,尤其用于投票系统硬件) Oxford Supercomputing Centre牛津高速计算中心 Oneway Subjourney Check for Normal Fares (airfare construction)Oneway Subjourney检查正常票价(机票建筑) Optical Scanning Cryptography光学扫描密码