1. 信号检测：signal converter 信号转换器 | signal detection 信号检测 | signal detector 信号检出器
2. 信号侦测：Signal design 号志设计 | Signal detection 信号侦测 | Signal grouping 信号群组
3. 信号検出：signal current == 信号電流 | signal detection == 信号検出 | signal estimation == 信号推定
4. 输出信号：n.信号旗,手旗 output signal | 输出信号 signal detection | 信号检测 starting signal be free