operaria职虫(膜翅目)
operan.歌剧n.挪威Opera软件公司的浏览器软件
operating authorization经营许可
operating system theory操作系统理论
operating system kernel操作系统核心,操椎统核心
operatinng availability可能利用率
operating control device运行控制装置
operating leverage ratio经营杠杆系数
operating vehicle-days运营车日
operating efffectiveness作战效能
operating recommendation操作建议
operating instrument set手术包