or

OR Optical Router 光路由器

OR Object Reuse 对象再利用, 目标重用

OR Object Recognition 目标识别

OR On Request adj. 承索(函索)

OR O-Ring n. O型环(密封圈)

OR Overall Resistance 总体阻力

OR Official Records (Of the American Civil War; historical citations) 官方记录(美国内战;历史引用)

OR Outdoor Research 户外研究

OR Osservatore Romano (Vatican newapaper) 梵蒂冈罗马Osservatore(newapaper)

OR Orange Range (Japanese rock band) 橙色的范围(日本摇滚乐队)

OR Outside Rehearsals 外面排练

OR Only Replication/Replicating 只有复制/复制

OR Outward Routing 外部路由

OR Object Reference (CORBA) 对象的引用(CORBA)

OR Orthogonal Region 正交地区

OR Organized Rhyme (rap group) (说唱团体组织韵)

OR Ordnance Requirement 军械要求

OR Owasco River Railroad Owasco河的铁路

OR Operations Resources 业务资源

OR Observed Ratio 观察比例