operaria职虫(膜翅目)operan.歌剧n.挪威Opera软件公司的浏览器软件operating modal analysis工作模态分析operating room assistant手术室助手operating cycles counter动作计数器operating administration运营管理部门operating system program操作系统程序operating expense budget[经] 营业费用预算operating system control操作系统控制operating system routine操作系统例行程序operating responsibility经营责任operating physical force操作力