operationalmode运作模式operationaladj.操作的；运作的；可用的；作战的Operational Test Center作战试验中心operational flexibility操作灵活性operational constraints使用限制(条件)Operational Time Record运转时间记录operational disposition战役布势operational water level运行水位operational vital point战役要点operational environment操作环境,作战环境operational maintenance日常保养Operational requirements运营要求