operato手术者, 操作人员
operan.歌剧n.挪威Opera软件公司的浏览器软件
operating market操纵市场
operating switch操作开关
operating defect操作弊端
operating-lamp手术灯
operating theory工作原理
operating magnet动作电磁铁
operating handle操纵杆,操作手柄
Operating spaces手术间隙
operating marginn.营业毛利
operating factor利用率