signal end信号端signaln.信号；标志v.(发信号)通知、表示adj.显著的signal analog companding通信信号的模拟压缩signal maintenance force信号维修队signal read-out system信号读出系统signal voltage flow path信号走向signal substances change信号物质变化signal handling capacity信号处理能力signal de-interleaving信号分选signal generating source信号发生源signal comparison method信号比较法signal transmission time信号传输时间