signal to发往 ... 的信号signaln.信号；标志v.(发信号)通知、表示adj.显著的signaling howler信号嗥鸣器signal crosstalk信道间串扰signal subspaces信号子空间signaling method传信方式signal reference参考信号signal statement符号语句,信号语句signaling theory信号理论signal modulator信号调制器Signal synthesis信号综合signal filtering信号滤波