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 tinting optimization信号优化配时signaling and communication通信信号signal processing technique信号处理技术signal-to-clutter ratio信号与杂波比signal point indicator lamp道岔表示器灯signal processing technology信号处理技术signal divide - modulating信号解调signal-transducing protein信号转导蛋白质signal communications system信号通信系统signal monitoring audiometer信号监听听力计