片语
chain n of command指挥系统
up the chain of command沿着级别的链条环环向上
administratice chain of command行政指挥系统
Traffic chain of command交通指挥系统
parallel chain of command平行的指挥系统
scalar chain of command指挥层次
administrative chain of command[管理]
chain of command wufsv指挥链
operational chain of command作战指挥系统