senior signalman号目
ordinary signalman英国〕三等信号兵
Signalman Training通信兵训练
block signalman线路所值班员
signalman engineering[军] 通信兵工程
fog signalman雾信号员
signalman-signalmen信号员
chief of signalman司号官
N-COUNT（可数名词） A signalman is a person whose job is to control the signals on a particular section of a railway. (铁路段上的)信号工