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O 开头的英语单词（共 89,563 个）
operational test for receivers and transmitter
[通信] 收发信机效用试验
operational test land station
作业测试地面站
operational test set
操作测试设备
operational testing
操作测试
operational thinking
操作思维
operational time
行时间，动作时间
operational training
战役训练
operational training course
作战训练课程
operational travel
业务差旅费
operational unit
[计] 操作部件
operational unit number
操作单元号码
operational use time
[计] 有效操作时间, 有效工作时间
operational variable
[化] 操作变量
operational version
使用方案
operational voltage
操作电压
operational wastes
作业废弃物
operational weather category
作业天气种类
operational weather limit
飞行天气限度
operational weather limits
飞行天气极限值
operational word
[计] 操作字
operational-level systems
作业层次系统
operational-services
[网络] 运保服务；营运服务；控制类业务