Occupational Exposure Limit职业接触限值 Office of Export Licensing办公室的出口许可 Organic Electron Luminescent有机电子发光 organic electro-luminescent有机电镀冷光 Optical Engineering Laboratory (University of Warwick, UK)光学工程实验室(华威大学、英国) Open Ended Line (chemical process industry for a pipe open to the atmosphere)开放性线(化学过程的管道开放的气氛) Optical Evaluation Laboratory光学评估实验室 Optional Endorsement Line (US postal service)可背书线(美国邮政服务) Oracle Enterprise Linux甲骨文公司Linux Old English Language老英语的语言 Operational Events List经营活动清单 Organizational Equipment List组织设备清单 Original English Language英文原版语言 Organic Electroluminescent (display technology)有机电致发光(显示技术) Over-Excitation Limiter过励磁器