signallingn.发信号；信号设备动词signal的现在分词形式.signaln.信号；标志v.(发信号)通知、表示adj.显著的signal-leaf bascule bridge单翼开启桥signal detection performance信号检测性能signal disposal and analysis信号处理与分析signal singularity detection奇异性检测signalling lamp for air horn空气号角通信灯signal multiplier iconoscope信号倍增光电摄像管signal concentrated blocking信集闭signal mixture amplification信号混合放大signal unit sequence control信号单元顺序控制signal transduction networks信号转导网络