operaria职虫(膜翅目)operan.歌剧n.挪威Opera软件公司的浏览器软件Operating-room nursing美学operating system process操作系统进程operating valve stem jaw操作阀柄爪operating system viruses操作系统型病毒operating system testing操作系统测试operating humidity limit使用湿度极限operating system nucleus操作系统内核operating response model操作响应模型operating system service操作系统服务operating expense ledger[经] 营业费用类帐